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Reproduction can begin when a whale is 10 to 15 years old. The gestation period is 13–14 months with females producing a calf once every three to four years. [28] Lactation typically lasts about a year. To survive in the cold water immediately after birth, calves are born with a thick layer of blubber. Within 30 minutes of birth, bowhead ...
The Bowhead whale can live to be 200 years old or more, and now scientists are hoping clues to longevity could be found in the whale's DNA. As the longest-lived mammal, scientists hoped sequencing ...
A gray whale extinct from the Atlantic for more than 200 years was spotted off the New England coast last week in an “incredibly rare event,” the New England Aquarium said.
The gray whale (Eschrichtius robustus), [1] also known as the grey whale, [5] is a baleen whale that migrates between feeding and breeding grounds yearly. It reaches a length of 14.9 meters (49 ft), a weight of up to 41 tonnes (90,000 lb) and lives between 55 and 70 years, although one female was estimated to be 75–80 years of age.
Each year, a light and dark layer of wax is laid corresponding with fasting during migration and feeding time. Each set is thus an indicator of age. [59] [60] [61] The oldest blue whale found was determined, using this method, to be 110 years old. [58] [62] The maximum age of a pygmy blue whale determined this way is 73 years. [63]
The massive fossils, which are 39 million years old, “are unlike anything I’ve ever seen,” said study author Alberto Collareta, a paleontologist at Italy's University of Pisa.
A year-old North Atlantic right whale was found dead Wednesday off the coast of Georgia, according to federal officials. The young female, known as Pilgrim, was discovered floating about 20 miles ...
Jonathan (hatched c. 1832) [2] [3] is a Seychelles giant tortoise (Aldabrachelys gigantea hololissa), a subspecies of the Aldabra giant tortoise (Aldabrachelys gigantea).His approximate age is estimated to be 192 as of 2025, making him the oldest known living land animal.