Sea urchin
Sea urchins or urchins () are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to . Their tests (hard shells) are round and spiny, typically from across. Sea urchins move slowly, crawling with their tube feet, and sometimes pushing themselves with their spines. They feed primarily on algae but also eat slow-moving or sessile animals. Their predators include sea otters, starfish, wolf eels, and triggerfish.
Irrawaddy River
Despite recent declines in the sea turtle populations, five species are known to nest in Burma at well known island and mainland beaches known as turtle-banks. These are the olive ridley sea turtle ("Lepidochelys olivacea"), the loggerhead sea turtle ("Caretta caretta"), the green sea turtle ("Chelonia mydas"), the hawksbill sea turtle ("Eretmochelys imbricata"), and the leatherback sea turtle ("Dermochelys coriacea").