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Tags: Humpback Whale View |
Tags: Humpback Whale View |
whales and dolphins csg010 blue whale jpg Taille 1024x768 whales and dolphins csg011 humpback whale jpg Taille 1024x768 Tags: Humpback Whale View |
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Megaptera genus_authority = Gray (John Edward Gray), 1846 species = M. novaeangliae binomial = Megaptera novaeangliae binomial_authority = Borowski (Georg Borowski), 1781 range_map = Cetacea range map Humpback Whale.png range_map_caption = Humpback whale range
The humpback whale (Megaptera novaeangliae) is a baleen (baleen whale) whale. One of the larger rorqual species, adults range in length from convert12-16mft and weigh approximately convert36000kglb. The humpback has a distinctive body shape, with unusually long pectoral fins and a knobbly head. It is an acrobatic animal, often breaching (Whale surfacing behaviour) and slapping the water. Males produce a complex whale song, which lasts for 10 to 20 minutes and is repeated for hours at a time. The purpose of the song is not yet clear, although it appears to have a role in mating.
Found in oceans and seas around the world, humpback whales typically migrate up to 25,000 kilometres each year. Humpbacks feed only in summer, in polar (Polar region) waters, and migrate to tropical (tropics) or sub-tropical waters to breed and give birth in the winter. During the winter, humpbacks fast (Fasting) and live off their fat (Blubber) reserves. The species diet consists mostly of krill and small fish. Humpbacks have a diverse repertoire of feeding methods, including the bubble net feeding technique.
Like other large whales, the humpback was and is a target for the whaling industry. Due to over-hunting, its population fell by an estimated 90% before a whaling moratorium was introduced in 1966. Stocks have since partially recovered; however, entanglement in fishing gear, collisions with ships, and noise pollution also remain concerns. There are at least 80,000 humpback whales worldwide. Once hunted to the brink of extinction, humpbacks are now sought by whale-watchers (whale watching), particularly off parts of Australia, Canada, and the United States.
Status System: iucn3.1
Image2: Humpback_whale_size.svg
Image2 Caption: Size comparison against an average human
Regnum: Animalia
Phylum: Chordata (Chordate)
Classis: Mammalia
Subclassis: Eutheria
Ordo: Cetacea
Subordo: Mysticeti
Familia: Balaenopteridae