dugong

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Marine mammal Dugong dugong of the order Sirenia (sea cows), found in the Red Sea, the Indian Ocean, and western Pacific Ocean. It can grow to 3.6 m/11 ft long, and has a tapering body with a notched tail and two fore-flippers. All dugongs are listed on the Convention on International Trade in Endangered Species (CITES) Appendix 1, which bans all trade in the species.

The addition of dugongs to CITES Appendix 1 followed a decision made in May 2000 to add Australia's coastal dugongs to the list despite the fact that they are not endangered, to facilitate protection of other dugong populations.

The dugong has a very long hind gut (30 m/98 ft in adults) which functions similarly to the rumen in ruminants. It feeds mostly on sea grasses and seaweeds, and is thought to have given rise to the mermaid myth. The dugong was thought to be the only truly herbivorous marine mammal until Australian research in 1995 showed that some eat sea squirts. These invertebrate creatures were shown to make up 25.5% of the wet weight of faeces from dugongs in Moreton Bay, eastern Australia.

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