Sea Life Deep Sea Fishes Sea Turtles Green Sea Turtles Hawksbill Sea Turtles Sea Lion Sea Monkeys Sea Otter Sea Birds Seahorses Sea Snakes Sea Dragons Sea Eagles Sea Anemone Sea Bass Sea Whales Sea Spider Sea Mammals In the Sea Sea Shells Sea Sponges Sea Caves Sea Coral Sea Cucumbers Sea Pictures and Wallpapers Pictures of the Sea Sea Wallpapers Other Sea Information Deep Sea Diving Deep Sea Research Marine Biology Naval Sea Systems Sea Exploration Sea Grape Sea Level Rise Oceans and Seas Indian Ocean Southern Ocean Atlantic Ocean Arctic Ocean Pacific Ocean Baltic Sea The Aral Sea The Caspian Sea Japan Sea Red Sea Okhotsk Sea North Sea Dead Sea Yellow Sea Caribbean Sea Andaman Sea Mediterranean Sea Black Sea Barents Sea Kara Sea 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.