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For most species, reproduction is seasonal. Ovulation coincides with male fertility. This cycle is usually coupled with seasonal movements that can be observed in many 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 ...
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 ...
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.
And sperm whales function as a family, "Sperm whales are often spotted in groups (called pods) of some 15 to 20 animals. Pods include females and their young, while males may roam solo or move ...
The second whale is an adult female, age 13, identified as #4120. She was first seen as a calf in 2011, and last seen swimming without entanglements 50 miles off the coast of Long Island, N.Y., in ...
Whales are fully aquatic, open-ocean animals: they can feed, mate, give birth, suckle and raise their young at sea. 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
The reasons for pec-slapping therefore can vary depending on age and sex of individual humpback whales. During the breeding season adult males pec-slap before they disassociate with a group of males that are vying for a female, whereas adult females pec-slap to attract potential mates and indicate that she is sexually receptive. [38]
Killer whales hunt and eat both young and adult belugas. [34] They live in all the seas of the world and share the same habitat as belugas in the sub-Arctic region. Attacks on belugas by killer whales have been reported in the waters of Greenland, Russia, Canada and Alaska.