Life Habits
This species usually lives at 1–10 metres in depth on coral reefs. They will often lodge themselves in a crevice, so that only their spines can be seen, but individual urchins who can't find a suitable crevice will live in more exposed situations. Individuals that have been able to find a crevice usually will roam about one metre from their crevice at night during feeding. Diadema is very sensitive to light, and will often pick its crevice or resting place based on how much shade there is.
Diadema mostly eat algae, and sometimes seagrass. Starving urchins have been known to become carnivorous.
Read more about this topic: Diadema Antillarum
Famous quotes containing the words life and/or habits:
“Never before since Jamestown and Plymouth Rock has our American civilization been in such danger as now.... [The Nazis] have made it clear that not only do they intend to dominate all life and thought in their own country, but also to enslave the whole of Europe, and then to use the resources of Europe to dominate the rest of the world.”
—Franklin D. Roosevelt (1882–1945)
“It contributes greatly towards a man’s moral and intellectual health, to be brought into habits of companionship with individuals unlike himself, who care little for his pursuits, and whose sphere and abilities he must go out of himself to appreciate.”
—Nathaniel Hawthorne (1804–1864)