A dugong forages in the seagrass meadows of shark bay , western australia .
图为在西澳洲鲨鱼湾的海草中觅食的儒艮。
The fisherman found a rare dugong in the water .
这个渔夫打捞上来一条珍稀的人鱼。
This behavior , and their typically slow movements , made them easy marks for hunters seeking dugong meat , oil , and teeth in coastal waters from east africa to australia .