9 of the Longest Living Sea Creatures! These are the oldest animals who survived in the ocean, rare species discovered in the world. Subscribe for the latest videos: https://goo.gl/7xzjzR 9: Rougheye Rockfish The rougheye rockfish got its name because of the ten spines found on the lower rim of its eye. It is also known as the blackthroat rockfish or the blacktip rockfish, & it is difficult to distinguish from its close cousin, the (short raker) Shortraker rockfish. It can reach a maximum size of 37 inches long & weighs up to 14 pounds. The species can be found at depths between 550 & 2,100 feet. The rougheye rockfish is especially known for having an extremely long lifespan, as it can live as long as 205 years. 8: Bowhead whale The Bowhead whale is known for having the largest mouth of any animal. The species can weigh from 75 to over 100 tons & can grow up to 60 feet long. The bowhead whale has been known to have an impressive life span of over 200 years. The oldest specimen found was caught in May 2007 off the Alaskan coast with the head of an explosive harpoon embedded under its neck blubber. It was estimated to be 211 years old at the time.A newborn calf weighs about 2,200 pounds & measures 12 to 14 feet. 7: The Greenland Shark The Greenland shark is also known as the gurry shark or the grey shark & it has the longest lifespan of all vertebrate species. It has been known to reach over 200 years in its lifetime, but new studies found it can get anywhere between 272 & 512 years old. The Greenland shark is one of the largest species of shark & can grow to 24 feet long & 3,000 pounds. It lives in the deep waters of the North Atlantic Ocean & the Arctic Ocean. 6: Quahog clam One of the oldest individuals, named Ming the clam after the Ming dynasty during which it was born, died in 2006 at 507 years old, after it was collected alive by an expedition & dredged off the coast of Iceland. It is unknown how long it could have lived, had it not been taken out of the ocean. Another long-lived specimen was previously collected in 1868 near Iceland, & was 374 years old. Arctica islandica, as its name suggests, resembles a quahog, & may grow to sizes exceeding 50 mm shell height & up to 5 inches in length. 5: Antarctic sponge An Antarctic sponge was found to have a very long lifespan, due to the fact that it grows extremely slowly in low temperature. As its name suggests, this sponge is found in the Antarctic Ocean, but some specimens were also found in the Ross Sea & the Scotia Sea. Scientists estimate that it can live for centuries, as one individual was found to be over 1,550 years old. Researchers came to this conclusion after using its metabolic rate & oxygen consumption as an approximate measurement. 4: Giant barrel sponge The Giant Barrel Sponge is the largest species of sponge found on Caribbean coral reefs & it can reach a diameter of 6 feet long. . Some of the specimens found in the Caribbean Sea by scientist are over 2,300 years old. The Giant Barrel Sponge is typically brownish-red to rose-purple or gray, has a hard texture & can grow on any hard surface. It feeds by continually pumping water into the sides of the sponge, through the sponge body. This process sucks microscopic bacteria into the channels, which then engulf them & extract their nutrients. 3: Black coral Black Coral is a recently discovered species that can live over 4,000 years. It lives at depths of 1,000 to 1,600 feet in protected waters of the Hawaiian Islands. The species was discovered in 2015 by a group of scientists at the Office of National Marine Sanctuaries & the Smithsonian Natural Museum of Natural History. As the coral resembles the structure of a tree, scientists found that this coral also has growth rings showing how long it lived. Black Coral is the longest-lived marine organism known to date, which explains the name “annosa”, which means long-lived. 2: Monorhaphis chuni Monorhaphis chuni is a deep sea sponge known for creating a single giant basal spicule that can reach lengths of 9 feet long. It is usually found in the Western Central Pacific, in the waters of Philippines & Indonesia. However, some specimens were also found in the East China Sea, or Tanzania, & Somalian waters. A study in the journal Aging Research Reviews revealed that a sponge species from the Monorhaphis chuni may live to be 11,000 years old. 1: Immortal jellyfish The Immortal Jellyfish is a biologically immortal species of jellyfish. After reaching maturity as a solitary individual, it can revert completely to a immature colonial stage. Its life begins as a larvae, & while at first it is a free-swimming organism, as it settles down & becomes mature, the Immortal Jellyfish gives a rise to a colony of polyps that are attached to the sea-floor. It was only named “The immortal jellyfish” because, theoretically, the process of the mature medusa reverting to the polyp stage can go on indefinitely.
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