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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). The humpback has a distinctive body shape, with long pectoral fins ...
The evolution of cetaceans is thought to have begun in the Indian subcontinent from even-toed ungulates (Artiodactyla) 50 million years ago (mya) and to have proceeded over a period of at least 15 million years. [2] Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla and branched off from other artiodactyls around 50 mya.
Whippomorpha or Cetancodonta is a group of artiodactyls that contains all living cetaceans (whales, dolphins, and porpoises) and hippopotamuses. [1] All whippomorphs are descendants of the last common ancestor of Hippopotamus amphibius and Tursiops truncatus. This makes it a crown group. [2] Whippomorpha is a suborder within the order ...
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 League of Nations held a conference on whaling in 1927, and in 1931, 27 countries signed a convention for the regulation of whaling. The convention was not enforceable, and a record ~43,000 whales were caught in 1931. In 1932, whaling companies formed a cartel, which cut harvests for two years, but then failed.
Humpback whale populations, once down by about 95%, have been increasing since a 1985 final moratorium on commercial whaling, according to NOAA. Still, the agency says, the whales face threats ...
Sanctuary. The sanctuary encompasses 1,400 square miles (3,600 km 2) in the islands' waters. It was designated by United States Congress on November 4, 1992, as a National Marine Sanctuary to protect the endangered North Pacific humpback whale and its habitat [2] The sanctuary promotes management, research, education and long-term monitoring.
A researcher fires a biopsy dart at an orca.The dart will remove a small piece of the whale's skin and bounce harmlessly off the animal. Cetology (from Greek κῆτος, kētos, "whale"; and -λογία, -logia) or whalelore (also known as whaleology) is the branch of marine mammal science that studies the approximately eighty species of whales, dolphins, and porpoises in the scientific order ...