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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
Sightings of these whales have been documented as far south as Cape Cod and Long Island. [44] This population is possibly continuous with orcas sighted off Greenland. [43] Orcas are sighted year-round in the Caribbean Sea, [45] and an estimated 267 (as of 2020) are documented in the northern Gulf of Mexico. [46]
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 February 2025. Large baleen whale species Humpback whale Temporal range: 7.2–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Late Miocene – Recent Size compared to an average human Conservation status Least Concern (IUCN 3.1) CITES Appendix I (CITES) Scientific classification Domain: Eukaryota Kingdom ...
[126] [21] Until the capture of these whales was banned in Canada and the US in 1976, the number of whales was reduced significantly. [125] Michael Bigg censused a total of 67 southern residents in 1976. 53 were older orcas, and 14 were assessed by size to be "young"—born during the capture period or after the last southern resident capture ...
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 ...
Pilot whales can be found in oceans nearly worldwide, but data about current population sizes is deficient. The long-finned pilot whale prefers slightly cooler waters than the short-finned and is divided into two populations. The smaller group is found in a circumpolar band in the Southern Ocean from about 20 to 65°S.
The global blue whale population is estimated to be 5,000–15,000 mature individuals and 10,000–25,000 total as of 2018. By comparison, there were at least 140,000 mature whales in 1926. There are an estimated total of 1,000–3,000 whales in the North Atlantic, 3,000–5,000 in the North Pacific, and 5,000–8,000 in the Antarctic.
From that date until 1946, the population appears to have recovered somewhat as whaling pressure lessened, but after the Second World War, with the industry's focus again on sperm whales, the population declined even further to only 33%. [87]