Sea cucumbers. They are frequently molted and may have more than one color. Sea Daisies! Their biology and evolution includes a wide range of crazy and wonderful things. Many different animals eat sea stars, including fish, sea turtles, snails, crabs, shrimp, otters, birds and even other sea stars. Feather Stars! A slender sea star ranging in color from reddish tan to bright orange, with brighter color concentrated on the ends of the arms. Echinoderms (Ancient Greek: ekhinos = spiny, derma = skin) include sea stars, sea urchins, feather stars, brittle stars and sea cucumbers. Common in pools & under rocks, mid- & low intertidal zones & subtidal; protected outer coast. Using small tubelike structures on the ends of its arms, the large purple starfish pries open its prey. Step into the underwater world of wonderful shapes and colours and see some of the spiniest animals beneath the waves. The Purple Sea Urchin is one of the most common sea urchins found on Sydney's coast. Like other sea stars, Pisaster ochraceus belongs to the phylum Echinodermata and the class Asteroidea. They are mostly ugly, but some people cook and eat them. Brittle stars. The Ochre Sea Star. Characteristics of sea stars. Some live in the intertidal zone, between low and high tide. Predator-prey interactions: how sea stars prey on mussels. Sea lilies. Predators with smaller mouths can flip the sea star over and eat … Bat stars are omnivorous in that they will eat both plant and animals. The ochre sea star has a variety of colours. Their five arms carry them through the water. Though the sea star’s skin is hard and bumpy, a predator can eat it whole if its mouth is large enough. Purple Star or Ochre Star (Pisaster ochraceus) Purple or Ochre Stars are one of the most common sea Sea stars, sea urchins and other echinoderms. Blastozoans! Stone Lillies! There are an estimated 2,000 species of sea stars living throughout the world’s oceans. Starfish! Starfish do not always have five arms, some species have more. Yes, starfish is technically edible. Echinodermata! Its sharp teeth can scrape algae off rocks, and grind up plankton, kelp, periwinkles, and sometimes even barnacles and mussels.. Sea urchins are sought out as food by birds, sea stars, cod, lobsters, and foxes.In the northwest, sea otters are common predators of the purple sea urchin. The tube feet will suction onto surfaces. There are 165 New Zealand species. p35. Habitat: found along the east coast and commonly along the southeast coast of the United States Status: Not Evaluated The Royal Starfish (Astropecten articulatus) is unbelievably epic; draped in decadent Although the word starfish is still a popular term, scientists generally use the word sea star for the animals because they aren't fish or even vertebrates. Seagulls are able to eat the entire starfish. Their poop is full of ground-up bits of purple-coloured sand as a result. Be careful handling these animals. Colours can vary so dramatically in this species, from light olive green to pink to a dark purple, that the Purple Sea Urchin was once thought to be three separate species. They have five or more arms and can be quite large. These ancient creatures have a stalk that clings to the sea floor, and they look like feather dusters. Forcefully pulling a sea urchin off a rock could injure it, making life harder for the sea urchin. Sea Cucumbers! Generalist predator, feeds on small snails, small mussels & barnacles, sea cucumbers. The blood star, with its bright red (or orange or yellow) color, feeds on sponges.Most of the other tide pool animals can eat very tiny sea stars, but no tide pool animal can eat an adult sea star. Sea Urchins! The purple starfish has a tubelike stomach, too; it extends and inserts into the shell of its prey to eat.

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