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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.
The humpback whale (Megaptera novaeangliae) is a species of baleen whale. It is a rorqual (a member of the family Balaenopteridae) and is the only species in the genus Megaptera. Adults range in length from 14–17 m (46–56 ft) and weigh up to 40 metric tons (44 short tons).
It can constitute as much as 50% of a whale's body weight. Calves are born with only a thin layer of blubber, but some species compensate for this with thick lanugos. [40] [41] Whales have a two- to three-chambered stomach that is similar in structure to those of terrestrial carnivores.
See Weight for detail of mass/weight distinction and conversion. Avoirdupois is a system of mass based on a pound of 16 ounces, while Troy weight is the system of mass where 12 troy ounces equals one troy pound. The symbol g 0 is used to denote standard gravity in order to avoid confusion with the (upright) g symbol for gram.
Some whales, such as the sperm or Cuvier's beaked, can spend over an hour between breaths, the Whale and Dolphin Conservation reports. It may not look like it, but whales have hair .
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.
An adult whale usually measures 14 to 18 m (46 to 59 ft) in length and 75 to 100 t (74 to 98 long tons; 83 to 110 short tons) in weight. The fluke of this species measures 2–6 m (6 ft 7 in – 19 ft 8 in) long and the 230 to 360 baleen plates are thought to grow to 4 m (13 ft) long, which is longer than that of any other whale by more than a ...
An adult female is 15 m (49 ft) [14] and can weigh up to 47 tonnes (46 long tons; 52 short tons), [14] with the larger records of 17.5–18 m (57–59 ft) [15] [16] in length and 80 tonnes (79 long tons; 88 short tons) [17] or up to 90 tonnes (89 long tons; 99 short tons) in weight, [18] making them slightly smaller than other right whales in ...