Hello, I'm an expert in the field of animal biology and longevity. When it comes to the longest living animals, there are several contenders, but the title often goes to specific species of marine organisms and tortoises.
The
Greenland shark is currently considered one of the longest-living vertebrates, with some individuals estimated to live for up to
400 years. Their longevity is supported by the cold temperatures of the Arctic waters they inhabit, which slow down their metabolism and the aging process.
Another contender is the
ocean quahog, a type of clam. The oldest known individual, named Ming, was found to be
507 years old when it was inadvertently killed during scientific research.
On land, the
Galápagos giant tortoise is known for its long life. The oldest recorded individual of this species, named Adwaita, died in 2006 in the Kolkata Zoo, India, and was estimated to be
250 years old.
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