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Orca gladiator (Bonnaterre, 1789) The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable its black-and-white patterned body.
Female sperm whales are sexually mature at 8 to 9 meters (26 to 30 ft) in length, whilst males are sexually mature at 11 to 12 meters (36 to 39 ft). [39] Female sperm whales are physically mature at about 10.6 to 11 meters (35 to 36 ft) in length and generally do not achieve lengths greater than 12 metres (39 ft).
Granny (orca) Granny (born c. 1936-1951 approx, died c. 2016), also known as J2, was a female orca of the J pod of southern resident orcas notable for her long life. Early estimates placed her birth in 1911, putting her at 105 years old at the time of her death. However, this estimate was later theorized to have been based on mistaken ...
Females do not mature until they are 10 to 13 years old, and gestation is approximately 15 months. [10] With the female maintaining care for her calf until it is two years old, orcas are only able to produce a calf once every 39 months, and thus cannot recover quickly from population decline.
Orcas, or “killer whales,” can grow up to 27 feet long and weigh as much as six tons. Known as the ocean’s top predator, they’re extremely intelligent, with their own languages of clicks ...
While J Pod always travels as a unit, and so does K Pod, L Pod orcas are usually encountered in two separate regular units traveling apart. The L4s, L47s, L90, and L72s are one consistent group; the L11s, L22s, L25, and L54s are the other; but sometimes the four L54s strikingly travel independently of all the others.
Sperm whales have the largest brain mass of any animal on Earth, averaging 8,000 cm 3 (490 in 3) and 7.8 kg (17 lb) in mature males. [23] The brain to body mass ratio in some odontocetes, such as belugas and narwhals, is second only to humans. [24] In some whales, however, it is less than half that of humans: 0.9% versus 2.1%.
Archeological evidence in the form of whale remains discovered in burial mounds suggests that whales have been consumed in Japan since the Jōmon period (between c. 14,000 and 300 BCE). Without the means to engage in active whaling, consumption at that time primarily stemmed from stranded whales. [ 25 ]