What are the eating habits of sea urchins?

Basic questions that everyone has aren't often obvious and so this week a quick summary overview: What and How do sea urchins eat??? (for info on starfish feeding see this). Urchins feed primarily with a unique jaw-like structure known as Aristotle's lantern. read more

Many sea urchins prefer kelp and various other seaweeds and marine "plants." There are several species found in cold-temperate water habitats.. California, New Zealand, Chile.. to name a few, and all these places have sea urchin species in abundance. read more

Sea urchins are popular among saltwater enthusiasts due to their colorful and cactus like spiny ball shapes. As you have read earlier (probably) that sea urchins are voracious eaters, they eat constantly. They will feed on algae of your reef tank. It will keep the algae growth in check. read more

Sea urchins or urchins (/ ˈ ɜːr tʃ ɪ n z /) 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 5,000 metres (16,000 ft; 2,700 fathoms). read more