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Dwarf sperm whale calves typically start eating solid food once they have reached a size of around 1.35 m (4 ft 5 in) though are not fully weaned until they reach around 1.5 m (4 ft 11 in). Toothed whale calves generally start eating solid food at around 6 months, and mothers stop lactating after around 18 to 20 months. [7]
During this feeding season humpback whales actively feed for up to twenty-two hours a day. [4] They do this so they can store enough fat reserves to live through their breeding season when they do not eat at all. [4] Humpback whales typically spend summer months in feeding grounds with cooler waters that they return to every year. [5]
The sperm whale or cachalot [a] (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator.It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia.
The whales eat amphipod crustaceans like tiny shrimp and worms, which they consume by sucking up water and sediment from the seafloor, where such creatures live, then using their baleens to filter ...
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.
Omura's whale or the dwarf fin whale (Balaenoptera omurai) is a species of rorqual about which very little is known. [3] Before its formal description, it was referred to as a small, dwarf or pygmy form of Bryde's whale by various sources. [4] The common name and specific epithet commemorate Japanese cetologist Hideo Omura . [5] [6]
In the Faroe Islands, whales mostly eat squid, but will also eat fish species such as greater argentine and blue whiting. However, Faroe whales do not seem to feed on cod, herring, or mackerel, even when they are abundant. [20] Pilot whales generally take several breaths before diving for a few minutes. Feeding dives may last over ten minutes.
The bowhead whale is the only baleen whale to spend its entire life in the Arctic and subarctic waters. [37] The Alaskan population spends the winter months in the southwestern Bering Sea . The group migrates northward in the spring, following openings in the ice, into the Chukchi and Beaufort seas. [ 38 ]