Varies by species

Urchin (Sea)

Echinoidea (class)

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About

Sea urchins are spiny marine invertebrates related to starfish and sand dollars. They have a round, spiny shell and move using tube feet on their underside.

Habitat

Oceans worldwide, from shallow reefs to deep sea

Diet

Herbivorous or omnivorous - algae, small invertebrates, and detritus

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Fun Facts

Sea urchins have a mouth with five teeth at the bottom of their body.
Some species of sea urchins are considered a delicacy in Japanese cuisine.
Their spines are used for protection and movement.

Conservation

StatusVaries by species

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