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Fragile Pink Sea Urchin

Allocentrotus fragilis

Physical Characters : An urchin "walks" on tiny tube feet, much like a sea star does. When an urchin finds a scrap of kelp - its favorite food - it uses its five rasping teeth to scrape away at the kelp and push tiny pieces into its mouth. This urchin feeds on plant and animal scraps that drift down from shallower waters. These are normally upto to 4 inches across (10 cm).

The fragile pink urchin is an abundant sea urchin off our coast. It may go for long periods without food, surviving on stores of fat.

If you've ever seen a Venus fly trap capture an insect, you have a clue as to how a predatory tunicate eats. Its mouthlike hood is quick to close when a small animal drifts inside. Once the tunicate catches a meal, it keeps its trap shut until it's ready to eat again.

Distribution : Mostly these are distributed at seafloor, 300-1,600 feet (91-488 m).

Food : These are mostly eating plant and animal scraps, including kelp that drifts down from surface waters.