Endangered species include dolphins, dugongs, whales and sea cucumbers. They include animals such as sea lions, whales, dugongs, sea otters and polar bears. Whales, orcas, dolphins, dugongs, and whale sharks live in the gulf as well. Manatees have shorter snouts than their fellow sirenians, the dugongs. It is home to endangered aquatic species including dolphins, dugongs, whales and sea cucumbers. They are commonly found attached to sharks, manta rays, whales, turtles, and dugongs. Sea turtles are frequent visitors to the gulf as are sharks, dugongs, and dolphins. Fifteen species of seagrass in beds attract the dugongs and turtles, and provide fish habitat. Various flora and fauna are supported in its ecosystem, such as ospreys, dugongs and turtles. Dugongs and sea turtles can also be found in surrounding waters. Mollusks, dugongs and turtles are a major part of the Jarawa diet. Its tail was forked, like that of whales or dugongs. There is evidence that dugongs actively alter seagrass species compositions at local levels. All the islands of the Philippines once provided habitats for sizeable herds of dugongs. Moreton Bay is the only place in Australia where dugongs gather in herds.