The past year has been devastating for North Atlantic right whales, whose population is already critically endangered with only an estimated 450 individuals remaining. Make a difference. Though these whales have been studied for years, plenty of mysteries remain about these creatures of the sea. Saving the endangered North Atlantic right whale We are closer than ever to the extinction of the North Atlantic right whale. March 19, 2018. In addition to being affected by boat traffic their desire to live close to land also exposes them to the possibility of becoming ill from chemical pollution and waste. About North Atlantic Right Whales. The North Atlantic right whale is the most endangered large whale on the planet. There are three species of right whales living in different parts of the world: North Atlantic (Eubalaena glacialis), Pacific (Eubalaena japonica), and Southern (Eubalaena australis). Fun Facts About North Atlantic Right Whales. Because these whales live close to land they aren’t known to face any real threats from possible predators. Each one ways close to 1,000 pounds. Thankfully, we right whales have been protected since the 1930s, but there are still less than 500 of us left in the western North Atlantic… North Atlantic right whales are an iconic New England species that attract tourists and locals alike to the ocean, hoping to catch a glimpse. When fully matured the North Atlantic right whales can reach lengths of 40 – 60 ft. and weigh up to 115 tons with up to 40% of the whale’s body weight being composed of blubber. Like other right whales, the North Atlantic right whale, also known as the northern right whale or black right whale, is readily distinguished from other cetaceans by the absence of a dorsal finon its broad back, short, paddle-like pectoral flippers and a long arching mouth that begins above the eye. The Government of Canada continues to work with partners, scientific experts, industry, environmental … North Atlantic Right Whales are a federally protected species and law requires that boats stay at least 500 yards away from the whales. The North Atlantic right whale can easily be identified by the white calluses on its head, which are very noticeable against the whale’s dark gray body. In fact, their number is declining fast. North Atlantic right whales were hunted virtually to extinction by the early 1890s. The North Atlantic right whale numbers only 366, the National Oceanic and Atmospheric Administration said on Monday in an estimate that reflects the … North Atlantic right whales can grow between 45 and 55 feet and weigh up to 70 tons. The stomach and chest may be all black or have irregular-shaped white patches. A North Atlantic right whale calf was discovered dead on the shore of a barrier island off North Carolina on Friday, according to officials. Only about 400 North Atlantic right whales remain and of those, only 85 are reproductively active females. Photo taken under Center for … The population of North Atlantic right whales, an endangered species that has been the focus of conservation efforts for decades, has dipped to less than 370, officials said. Both the North Atlantic Right Whale and North Pacific Right Whale species are listed as ‘endangered’ by CITES and the IUCN, and under the U.S. The only primary threat/predator to these marine mammals are humans. Their scientific name, Eubalaena glacialis, means “good”, or “true whale of ice.” Eubalaena is derived … They have been listed as endangered since 1970 and remain one of the world's most endangered large whale species. The population of North Atlantic right whales has dropped below 370, according to a survey by the National Oceanic and Atmospheric Administration. 2. Right whales feed on zooplankton and other tiny organisms using baleens up to 8 feet long. The word "cetacean" is from the Latin "cetus", which means large sea creature. This led to centuries of overexploitation. Another 13 were … Currently there are estimates of 250 – 500 North Atlantic right whales still in existence. These whales can usually be found traveling alone or in small pods of 2 – 3 whales, however larger groups may be found traveling together during mating season. It has long fringes of baleen rather than teeth, which are used for straining tiny animals out of the water for food. Scientists estimate that even a single human-caused North Atlantic right whale death a year threatens the species’ chances of recovery. I also happen to float after I die, which makes it easier for whalers to spot me and haul me onboard. That means they don’t have any teeth! Along with other whales, dolphins, and porpoises, right whales are cetaceans—one of the major groups of marine mammals . Right whales of the Eubalaena whale genus are part of the order Mysticeti.Other whales (baleen whales) part of this order are Blue, Humpback, and Gray.Within the genus of Right whales there are three species of whale: the North Atlantic Right whale (Eubalaena glacialis), the North Pacific Right whale (Eubalaena japonica), and the Southern Right whale (Eubalaena autralis). Each winter, North Atlantic right whales migrate from cold northern waters to warmer areas in the south, where the females give birth. Disclosure Policy | Privacy Policy | Copyright © 2020 WhaleFacts.org. Learn more about Oceana's campaign to stop the first large whale extinxtion of the century on our North Atlantic right whale campaign page or take action right now using the banner below. These whales are also distinguished by their large broad backs which lack any kind of dorsal fin or stabilizer. All three species of right whale are similar in appearance; their genetic pools are distinct, but they are otherwise indistinguishable. The fact that their are so few North Atlantic right whales in existence means that disease and sickness could potentially wipe out an entire population. All three species of right whale are similar in appearance; their genetic pools are distinct, but they are otherwise indistinguishable. A second major cause of death in North Atlantic Right Whales is entanglement in fishing equipment. 12 of the 18 confirmed deaths were documented in the Gulf of St. Lawrence in Canada while the remaining 6 were found in US waters. Please try The whale … They are either dark gray in color or black. The huge head of North Atlantic right whale makes up about one-third of the overall body size. Now, tragically, their sole remaining habitat is in the western North Atlantic, along the eastern US and Atlantic Canada, with a few individuals known to wander as far as Iceland, Norway, England, and the Azores. Endangered Species Act. learn more about right whales. The mouth is one of the widest in the animal kingdom. Right whale mothers and their calves exhibit strong behavioral attachments. When fully matured the North Atlantic right whales can reach lengths of 40 – 60 ft. and weigh up to 115 tons with up to 40% of the whale’s body weight being composed of blubber. They have been observed swimming up on their mother’s back or by butting heads, and sometimes the mother may roll over to hold her calf with her flippers. Right whales are similar to bowhead whales, but smaller. A second major cause of death in North Atlantic Right Whales is entanglement in fishing equipment. In terms of appearance the North Atlantic right whale has a dark gray to black skin tone with intermittent white spotting along its belly. It is estimated that the North Atlantic right whale gives birth to a single offspring once every 3 – 6 years on average while they are fertile. An adult North Atlantic right whale can weigh around 70 tons with up to 40% of the whale’s body weight composed of blubber. Right whales of the Eubalaena whale genus are part of the order Mysticeti.Other whales (baleen whales) part of this order are Blue, Humpback, and Gray.Within the genus of Right whales there are three species of whale: the North Atlantic Right whale (Eubalaena glacialis), the North Pacific Right whale (Eubalaena japonica), and the Southern Right whale (Eubalaena autralis). Their characteristic feature is callosities, which are raised white patches of roughened skin on their heads. General: biology: history: habitat: photo-identification : threats to survival: Website by NARWC. 3. However, decades of protections have not restored the population to sustainable levels. While Female whales can often be seen traveling with their young males may or may not be found traveling with their children or female counterparts as long-term relationships are often rare among this species. These whales are known for their unique shape and the white calluses that form on their head. Centuries of hunting have drastically reduced their numbers to a tiny fraction of the original. It is a big, mostly black animal with some whitish patches on its head and belly, it lacks a dorsal fin, and it has a graceful, deeply notched tail or "fluke". Each right whale has a unique pattern of callosities that help scientists’ identify each individual. Previously the North Atlantic right whale was a heavily hunted marine mammal due to its large size, habitat and slow behavior. North Atlantic right whales are found from Atlantic Canada to the southeastern United States and migrate along the length of the east coasts of the United States and Canada. North Atlantic right whales have a stocky black body, with no dorsal fin. North Atlantic right whale is an interesting animal. Our ocean faces many threats like the onslaught of ocean trash, overfishing and ocean acidification. Unlike other whales, a right whale has distinctive callosities (roughened patches of skin) on its head, along with a broad back without a dorsal fin, occasionally with white belly patches, and a long, arching rostrum, or upper jaw, that begins above the eye. North Atlantic right whale facts. Poster by AllPosters. Due to their severally depleted stocks additional laws and regulations have been placed to prevent further endangerments of these whales and numerous recovery proposals have been made and implemented to try and help these whales repopulate, however the future of the North Atlantic right whale remains unknown. Right whales are the rarest of all large whale species and among the rarest of all marine mammal species. The leading causes of death are entanglements in fishing gear and vessel strikes. Researchers use their ear wax to determine their age after they have died. North Atlantic Right Whales are a federally protected species and law requires that boats stay at least 500 yards away from the whales. Right whales are the rarest of all large whale species and among the rarest of all marine mammal species. Research has indicated that North Atlantic right whales also play a key role in marine ecosystems in an unexpected way. Due to severe hunting in the past this species has seen large declines in both their population size and breeding frequency. Callositites on North Atlantic right whales appear white due to cyamids, which are commonly known as whale lice. Home ANNUAL MEETING NARWC Databases > Right Whale News Report Cards Resources Upcoming Meeting NORTH ATLANTIC RIGHT WHALE. As a small population these whales could theoretically face large scale issues should they become sick. Text HELP to 69866 for more information. Not much is known about the lifespan of these whales, however it is estimated that the North Atlantic right whale has a lifespan of 50 – 100 years. The North Atlantic right whale is a critically endangered species that lives off the Atlantic coast of the United States and Canada. These whales also have a long history of human exploitation dating back to the 10th century where they were heavily harvested by whalers for their abundant oil and blubber deeming them the “right” whales to hunt. 30 whales have been killed since 2017: That’s 7% of their entire population. The North Atlantic right whale is one of the most endangered large whales on the planet. They have a long arching mouth that begins above the eye and rows of baleen plates hanging on each side of their upper jaw.  As of today’s date, no North Atlantic right whale deaths and no new entanglements were reported in Canadian waters in 2020. Whales that suffer from pollution are known to face several issues including, reproductive issues, possible deformity and death. Fun Facts About North Atlantic Right Whales. PHOTO: NOAA/NEFSC/PETER DULEY In a sad reversal of fortune, the North Atlantic right whale is in deep trouble again after rebounding in recent decades from centuries of hunting. These types of pollution can either affect the whale directly or through poisoning the food they consume. Terms and Conditions. Endangered Species Act. With the help of donors like you, Ocean Conservancy is developing innovative solutions to save our ocean. North Atlantic Right Whales weigh up to 20 tons and average 50 ft in length. In areas where commercial fishers lay casting nets and other types of aquatic gear there is the potential that a right whale could end up caught in the fishing net and since these animals are mammals it is highly possible they could drown if they are unable to resurface and acquire oxygen. Ocean Conservancy is a 501(c)3 – Tax ID #23-7245152 – Donations are 100% tax-deductible as allowed by law. Other unique features include a large head, which makes up a quarter of its total body length, narrow tai… North Atlantic Right Whale Conservation: Get the Facts from Our Ship Strike Experts. Florida Fish and Wildlife Conservation Commission, Unfortunately, the ESA is under threat in Congress. Although North Atlantic right whales now occur almost exclusively along the east coasts of the United States and Canada, a few individuals have been observed entering the Gulf of Mexico and venturing across the Atlantic to European waters. The ESA is a game-changing law that has provided protection to countless species—like the North Atlantic Right Whale—and has brought many of them back from the brink of extinction. Communication may also involve physical contact such as bumping and touching one another’s flippers. The North Atlantic right whale communicates through the use of low pitched moaning and whining sounds. These whales are also distinguished by their large broad backs which lack any kind of dorsal fin or stabilizer. White calluses on its head are actually whale lice buried in the skin. These whalesare known for their unique shape and the white calluses that form on their head. They are not true lice like the kind that humans can get, but rather a type of skeleton shrimp parasite that lives on some whales, dolphins and porpoises! The North Atlantic right whale can directly benefit from our enhanced protection measures, and we are appreciative of all industries’ active participation in their development and with their compliance.” The Honourable Marc Garneau Minister of Transport. For the past several years, North Atlantic right whales have been increasingly present in the Gulf of St. Lawrence, and Canada has taken significant action to protect … They also eat In many cases pods may consist of a mother and her child or 2 – 3 family members/friends who travel together. North Atlantic right whales grow up to 52 feet (15.8 m) long and weigh up to 140,000 pounds (63.5 metric tons). Ocean Conservancy, International Coastal Cleanup, Ocean Action Network, Trash Free Seas, Trash Free Seas Alliance and Rippl are registered trademarks of Ocean Conservancy. As the name suggests the North Atlantic right whale can be found living in the North Atlantic Ocean in temperate waters. Scientists suspect that at least 72 percent of all right whales have been entangled at some point in their lives, and that 10-30 percent of us are entangled every year! When a right whale breathes out from its two blowholes, the whale’s breath, combined with water droplets, makes a characteristic V-shape. Reproduction. Due to the fact that these marine mammals enjoy remaining close to land they are increasingly exposed to potential threats of being struck by passing ships and other commercial vessels. They are about 50 feet in length and can weigh as much as 70 tons. Monday, November 30, 2020 Category: Whales and Dolphins Tags: #conservation #eubalaena glacialis #mysticeti #right whale by Enrico Villa and Dania Tesei An update on the species status from the time when, back in 2009, we were gifted with a sighting of a North Atlantic right whale … What we do know is that they can be found in the Atlantic Ocean along the Eastern coast of the United States and Canada. Approximately 25 are in the North Pacific and approximately 15,000 are found in the Southern regions. These whales reach sexual maturity between the ages of 8 – 11 at which point they may begin bearing offspring of their own. Mobile alerts from Ocean Conservancy. North Atlantic right whales live . Instead, they use baleen, which looks like a comb, to filter their food. During the whaling era tons of North Atlantic right whales were slaughtered causing this species to become severally depleted in numbers. The eyes are very small and lips are large. On ave… In fact despite being a highly protected species low population numbers have made it difficult for these marine mammals to repopulate their stocks. Right whale – genus Eubalaena / Photo courtesy of NOAA . During mating season the North Atlantic right whale can be found migrating to coastal waters where they can breed and give birth to their young. Since 1990, the North Atlantic right whale’s primary feeding ground, the Gulf of Maine, has warmed three times faster than the rest of the world’s oceans. Hunting of right whales began as early as the 10th century. Fast Facts: North Pacific Right Whale. [Figure][1] Starboard, a female right whale, died off Canada's coast after dragging snow crab traps for days. North Atlantic right whale facts. The North Atlantic right whale has a single surviving breeding population in the western North Atlantic, and is classed as critically endangered, with a total population best … 26 whales have died since April 2017. A whale found dead off the coast of New Jersey on Thursday was a six-month-old male North Atlantic right whale calf, researchers from the New England Aquarium confirmed Sunday evening. again or contact 1.888.780.6763. It’s also one of the most endangered: a recent estimate from the North Atlantic Right Whale Consortium revealed that there are only 356 left. Wildscreen's Arkive project was launched in 2003 and grew to become the world's biggest encyclopaedia of life on Earth. From our headquarters in Washington DC, we’re working to ensure that our ocean gets the funding and attention it requires. Right whales were named by whalers who considered them the "right" whales to hunt, since they … They can weigh up to 100 tons as well as be up to 60 feet long. These whales are rich in blubber and have 2 blowholes. Since 2017, 31 right whales are known to have died, with another 11 … New England/Mid-Atlantic. Scientists have found they can eat between 2,200 and 5,500 pounds of food every day! We’re dedicated to working with indigenous communities, legislators, scientists and people like you to advocate for science-based solutions to protect this fragile ecosystem. The average gestation period for the North Atlantic right whale is 12 – 13 months. Entanglement is one of their leading causes of death. There is no denying the sheer size of the Right Whale. Biologists performed a necropsy on the North Atlantic right whale calf and took DNA samples Saturday. Pectoral flippers are relatively short, broad, and paddle-shaped. The North Atlantic right whale numbers only 366, the National Oceanic and Atmospheric Administration said on Monday in an estimate that reflects the … Msg & data rates may apply. One way to correctly identify them is through the calluses on their heads. Its Latin name is Eubalaena glacialis and it is the Right Whale that is found in northern Atlantic waters. Text STOP to 69866 to stop receiving messages. The history of the North Atlantic right whale’s decline is right there in its name. The North Atlantic right whale is the most endangered large whale on the planet. Their large size, slow nature and coastal lifestyle all contributed to making them easy prey for whalers during the explosion of the History of Whaling in the 17th century as well as during earlier whaling expeditions. Thanks for signing up for Ocean Conservancy emails. The species is in decline with a 1% annual loss since 2010. The North Atlantic Right Whale can live up to 70 years old." Thankfully, in the 1970’s, to safeguard the species from the brink of extinction, they gained the protection of the Endangered Species Act (ESA) and the Marine Mammal Protection Act (MMPA). The Sightings database contains records of thousands of sightings of right whales in the North Atlantic Ocean, as well as sightings of many other species of whales, dolphins, sea turtles, seals, and large fishes. Calves are about 14 feet at birth and adults can grow to lengths of up to 52 feet. Click on thumbnail to buy. Close to 400 of them are believed to live in the North Atlantic. North Atlantic right whales are baleen whales that feed entirely on zooplankton and their favourite types are large copepods which are about the size of a grain of rice. Like other mammals, the calf stays with its mom for up to a year and often in close contact. Entangled North Atlantic Right Whale Spotted South of Nantucket. Fast Facts. NORTH ATLANTIC RIGHT WHALE. The North Atlantic right whale is one of the rarest of marine mammals. Whaling for almost 1000 years brought this species close to extinction in the early 20th century ([2][3]). They also have rough white patches of skin called callosities on their head, chin, and sometimes on the edge of their lower lips. The Government of Canada is committed to the protection and recovery of the endangered North Atlantic right whale, while ensuring sustainable fisheries and navigational safety for mariners in Canada's oceans and waterways. As with other species of baleen whale these whales use a hunting method known as filter feeding to capture their prey. At least 4% of the population died between April 2017 and January 2018. Their tail is broad, deeply notched, and all black with a smooth trailing edge. The North Atlantic right whale is federally listed as an endangered species. 1. Sorry, but we failed to add you to the list. Fewer than 450 remain. Fewer than 360 remain. Remarkably, they only eat zooplankton like copepods and krill larvae. The Whales use their lungs to breathe air, just like us. NORTH ATLANTIC RIGHT WHALE CONSORTIUM. During feeding season these whales may be seen gathered together in areas that are highly concentrated with krill and various invertebrate that they can feed on. chiefly in western Atlantic coastal waters or close to the continental shelf. As the name implies the North Atlantic right whale can be founding swimming and living in the North Atlantic Ocean. North Atlantic right whales used to be widespread throughout the North Atlantic. Adult right whales are generally between 45 and 52 feet in length and can weigh up to 70 tons.When feeding, these whales swim slowly and use baleen to eat schools of small, shrimp-like crustaceans, called zooplankton. The North Atlantic right whale is one of the largest species of aquatic mammals currently found in nature. North Atlantic right whales are easily recognized by the fact that they have no dorsal fin, and dark colours on their back (some individuals may have white patches on the throat or belly). It is among the rarest of all large whale species and, indeed, of all marine mammal species. North Atlantic right whales can live up to 70 years. Unfortunately, this sometimes gets me in trouble: I’m particularly susceptible to ship collisions and entanglement in fishing gear. I even got my name because I was the “right” type of whale to hunt. Last … Since 2017, according to NOAA, 32 North Atlantic right whales – just under 10% of the living population – have been found dead. Their current range is closely linked to their life history, contingent upon nursery areas and feeding grounds with the right characteristics. Currently, North Atlantic right whale populations are estimated to be less than 440 individuals. As with other species of baleen whale the females tend to grow larger than their male counterparts when fully grown. The Sightings database contains records of thousands of sightings of right whales in the North Atlantic Ocean, as well as sightings of many other species of whales, dolphins, sea turtles, seals, and large fishes. Eubalaena is derived from the Greek meaning “well” or “true” whale, and the right whale’s specific name, glacialis, means “icy.”. This blubber also helps them to regulate their temperatures by keep heat in while in colder waters. The history of the North Atlantic right whale’s decline is right there in its name While they are no longer hunted, the whales are now threatened by entanglements in fishing gear and ship strikes. They have to come to the surface to breathe using their blowhole. ! With the help of donors like you, Ocean Conservancy is developing solutions to save our ocean. Scientific Name: Eubalaena glacialis Average Length: 50 feet (15 metres) Status: Endangered - A species facing imminent extinction Primary Threats: collisions with ships and entanglement in fishing gear. They form a distinctive pattern … Population. Periodic messages. North Atlantic Right Whales weigh up to 20 tons and average 50 ft in length. North Atlantic right whales are one of the world’s largest whales. Historically found throughout the Atlantic Ocean, it was named the “right” whale because its large body and thick blubber made it attractive to hunt – it can weigh up to 70,000 kilograms and measure up to 18 metres. It has a broad back without a dorsal fin and a long arching mouth that begins above the eye. The North Atlantic Right Whale is one of the most critically endangered populations of large whales in the world. With the help of over 7,000 of the world’s best wildlife filmmakers and photographers, conservationists and scientists, Arkive.org featured multi-media fact-files for more than 16,000 endangered species. North Atlantic right whales like this one struggle to free themselves from fishing gear. In 2008 an estimated minimum of 300,000 whales and dolphins were killed each year as a result of fisheries bycatch, a number which has likely doubled in the past 10 years, especially when deaths from shipping and habitat loss are also considered. 1. Feature Story, New England/Mid-Atlantic. The typical diet of the North Atlantic right whale consists of small fish, krill, larvae, copepods, pteropods, zooplankton, cyprids, euphausiids and other small invertebrate. Its coloration is dark grey to black, with some individuals occasionally having white patches on their stomachs or throats. The species is in decline with a … Unfortunately, the ESA is under threat in Congress, so as you read through these facts, consider what it would be like if we didn’t have laws like the ESA on the books to protect these majestic species. An interesting fact has to do with the size of the testicles on a Right Whale. Fast Facts. Along with the North Atlantic right whale and the southern right whale, the North Pacific right whale is one of three species of living right whales in the world. Fewer than 360 whales survive today. Although they are now a protected species these whales still face numerous threats that challenge their existence. Right whales or black whales are three species of large baleen whales of the genus Eubalaena: the North Atlantic right whale (E. glacialis), the North Pacific right whale (E. japonica) and the Southern right whale (E. australis).They are classified in the family Balaenidae with the bowhead whale.Right whales have rotund bodies with arching rostrums, V-shaped blowholes and dark gray or black skin. The National Park Service at Cape Lookout National Seashore posted news of the whale's … 2. Population size is at a critical level with only about 300 animals remaining in western North Atlantic waters. Today common threats for the North Atlantic right whale include collisions with passing ships, becoming entangled in fishing nets and other fishing gear and potential pollution. Photo: North Atlantic Right Whale Consortium Catalog. The North Atlantic right whale is a critically endangered species that lives off the Atlantic coast of the United States and Canada.  North Atlantic right whales grow up to 52 feet (15.8 m) long and weigh up to 140,000 pounds (63.5 metric tons). Quick facts. After birth the female whale may nurse her child for up to 2 years although most whales are able to survive on their own within the first 12 months. NO CALVES were reported during the 2018 calving season. Along with the North Atlantic right whale and the southern right whale, the North Pacific right whale is one of three species of living right whales in the world. Adult right whales are generally between 45 and 52 feet in length and can weigh up to 70 tons. Both the North Atlantic Right Whale and North Pacific Right Whale species are listed as ‘endangered’ by CITES and the IUCN, and under the U.S. These whales can be seen in gathered in various popular locations throughout the U.S. such as Cape Cod, the Gulf of Maine, Florida, New Bedford and New York and throughout various counties such as Africa, Ireland, New England, North Europe (rare sightings), Norway, Portugal and Spain among other areas with temperate waters. Right whales have been listed as “endangered” on the species list for over 50 years. D espite international protection from commercial whaling since 1935, the North Atlantic right whale ( Eubalaena glacialis ) [[HN1][1]] remains one of the most endangered whales in the world ([1][2]). Hunted since the 11th century, right whales were nearly extinct when they finally received protection from whaling in 1935. Behavior. Too Many Decades, Not Enough Protections. Northern right whales tend to move through the ocean at a fairly slow pace for an animal of their size, they feed near the surface, and they float when killed; thus they were considered the "right" catch for whalers. They are up to 17 meters long and weigh up to 70 tons. A world-leading marine system requires strong environmental protection for Canada’s coastal habitats, ecosystems and marine species, including whales. An aerial survey team from Center for Coastal Studies spotted an entangled right whale south of Nantucket on October 19, 2020. In terms of appearance the North Atlantic right whale has a dark gray to black skin tone with intermittent white spotting along its belly. The US and Canadian governments enforce seasonal boat speed limits in areas that right whales frequent. "The north Atlantic right whale weighs 88,000 to 150,000 pounds, 63 metric tons. Many North Atlantic right whales travel from their feeding grounds off the coast of the northeastern United States and Cana… A baleen whale, it feeds by swimming through a swarm of plankton with its mouth open and the head slightly above the surface. They also have a blowhole that is V shaped so it is unique compared to other types of whales. On average however these whales grow somewhere between 42 – 52 ft long and weigh between 45 – 75 tons.