NEW ZEALAND DOLPHINS - Dolphins belong to the family Delphinidae. - TopicsExpress



          

NEW ZEALAND DOLPHINS - Dolphins belong to the family Delphinidae. This family belongs to the order Cetacea, which includes all whales and dolphins. In New Zealand there are 10 species and one subspecies of dolphin, the most prevalent being the dusky and the common dolphin. Hector’s dolphin is the only species confined to New Zealand waters. The bottlenose, although well known, has a relatively small local population. Other dolphins are occasional visitors. The larger members of the Delphinidae family, such as orcas, are commonly called whales because of their size; five of these are also found in New Zealand. Dolphins, along with whales and porpoises, are thought to be descendants of terrestrial mammals, most likely of the Artiodactyl order. Dolphins entered the water roughly fifty million years ago. Dolphins have a streamlined fusiform body, adapted for fast swimming. The basic colouration patterns are shades of gray with a light underside and a distinct dark cape on the back. It is often combined with lines and patches of different hue and contrast. schools.look4.net.nz/…/marine/mammal/whales/dolphins/
Posted on: Mon, 20 Oct 2014 14:50:14 +0000

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