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The Pond

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Sturgeon

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Danish lake

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American lobster

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American lobster

American lobster

Yelloweye rockfish

Yelloweye rockfish

Red sea urchin

Red sea urchin

Fish-eating anemone

Fish-eating anemone

Giant green anemone

Giant green anemone

Plumose sea anemone

Plumose sea anemone

Red sea urchin

Red sea urchin

Facts

LatinStrongylocentrotus franciscanus
Size19 cm
FoodSeaweed
HabitatRocky reef
IUCN

Not evaluated

LocationPacific Ocean
Map

World's largest

The red sea urchin is the largest of all sea urchins. Its shell grows to a diameter of over 19 cm and its spines can become 8 cm in length. It can vary in colour from red to dark burgundy.

Very old

Research shows that the red sea urchin lives for a very long time, but its lifespan depends on its distribution. In Southern California it can live to about 50 years of age, but red sea urchins in Canada can achieve an age of more than 100 years.