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The blue whale (Balaenoptera musculus) is a marine mammal and a baleen whale.Reaching a maximum confirmed length of 29.9 m (98 ft) and weighing up to 199 t (196 long tons; 219 short tons), it is the largest animal known ever to have existed.
Blue whale with calf off the coast of Iceland. The blue whale is the largest living animal in the world in the present epoch. Its summer range extends from the east of Canada to Svalbard, and this range is potentially occupied by two separate groups. [10] Like other rorquals, blue whales appear to migrate further south during the winter.
The pygmy right whale shares several characteristics with the right whales, with the exception of having a dorsal fin. Also, pygmy right whales' heads are no more than one quarter the size of their bodies, whereas the right whales' heads are about one-third the size of their bodies. [11] The pygmy right whale is the only extant member of its ...
A thrifty study uncovers a wealth of data about one of the world's largest and most elusive species.
Most toothed whales have no fixed bonds. In many species, females choose several partners during a season. Baleen whales are largely monogamous within each reproductive period. [citation needed] Gestation ranges from 9 to 16 months. Duration is not necessarily a function of size. Porpoises and blue whales gestate for about 11 months.
Whales range in size from the 2.6 metres (8.5 ft) and 135 kilograms (298 lb) dwarf sperm whale to the 29.9 metres (98 ft) and 190 tonnes (210 short tons) blue whale, which is the largest known animal that has ever lived. The sperm whale is the largest toothed predator on Earth.
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Blue whales have returned to a part of the Indian Ocean where the species was once wiped out by whaling decades ago. Researchers in the Seychelles have captured footage of the marine mammals in ...