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Greenland shark at Admiralty Inlet, Nunavut, with an Ommatokoita. The Greenland shark is a thickset species, with a short, rounded snout, small eyes, and small dorsal and pectoral fins. [9] The gill openings are very small for the species' great size. Female Greenland sharks are typically larger than males. [13]
The Greenland shark had been estimated to live to about 200 years, but a study published in 2016 found that a 5.02 m (16.5 ft) specimen was between 272 and 512 years old. [75] [76] That makes the Greenland shark the longest-lived vertebrate. [77] The maximum lifespan of the freshwater pearl mussel (Margaritifera margaritifera) may be 210–250 ...
The rarely seen Greenland shark is a sluggish creature, slowly swimming through the deep waters of the North Atlantic and Arctic oceans. The polar fish is the only species of shark that can ...
Greenland sharks are the longest-living vertebrates in the world, according to NOAA. They can live “at least 250 years” but might reach “over 500 years” in age. Most of the shark’s long ...
Biological immortality (sometimes referred to as bio-indefinite mortality) is a state in which the rate of mortality from senescence (or aging) is stable or decreasing, thus decoupling it from chronological age.
Somniosus cheni Hsu, Lin, & Joung, 2020 (Taiwan sleeper shark) †Somniosus gonzalezi Welton & Goedert, 2016 – fossil, Oligocene; Somniosus longus Tanaka, 1912 (frog shark) Somniosus microcephalus (Bloch & J. G. Schneider, 1801) (Greenland shark) Somniosus pacificus Bigelow & Schroeder, 1944 (Pacific sleeper shark)
Earlier estimates suggested the Greenland shark (Somniosus microcephalus) could reach about 200 years, but a recent study found that a 5.02-metre-long (16.5 ft) specimen was 392 ± 120 years old (i.e., at least 272 years old), making it the longest-lived vertebrate known. [70] [71]
Scientists discovered the oldest known DNA and used it to reveal what life was like 2 million years ago in the northern tip of Greenland. “The study opens the door into a past that has basically ...