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.
Ras Muhammad National Park
The area is home to more than 1000 species of fish, 40 species of star fish, 25 species of sea urchins, more than a 100 species of mollusc and 150 species of crustaceans. Among others, sea turtles, such as the green turtle ("Chelonia mydas") and the hawksbill turtle ("Eretmochelys imbricata") appear regularly in Ras Mohammad.