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19 June, 23:00

What are some organisms closely related to the Irrawaddy Dolphin?

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  1. 20 June, 00:09
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    The Irrawaddy dolphin is similar to the beluga in appearance, though most closely related to the killer whale. It has a large melon and a blunt, rounded head, and the beak is indistinct. The dorsal fin, located about two-thirds posterior along the back, is short, blunt, and triangular. The flippers are long and broad. It is lightly coloured all over, but slightly more white on the underside than the back. Unlike any other dolphin, the Irrawaddy's u-shaped blowhole is placed on the left of the midline and opens towards the front of the dolphin. Their short beaks appear very different than those of other dolphins, and their mouths are known for having 12-19 peg-like teeth on each sides of their jaws. Irrawaddys can range from 90 kg (200 lb) to 200 kg (440 lb) and length is 2.3 m (7.5 ft) at full maturity.[7] Maximum recorded length is 2.75 m (9.0 ft) of a male from Thailand.[6]
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