Sea and Sky: Echinoderms
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Scan day: 17 February 2014 UTC
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Description: A brief description of the phylum followed by a long list of annotated photographs.
Echinoderms Page 1 - Coral Reef Life on Sea and Sky The echinoderms are a group of animals that includes starfish, urchins, feather stars, and sea cucumbers. They are simple animals, lacking a brain and complex sensing organs. Echinoderms are characterized by their radial symmetry and a central mouth. Although a sea urchin looks round, closer inspection reveals that it is nothing more than a starfish with its legs wrapped inwards to form a sphere. The echinoderms are found in a stunning variety of shapes and colors, and are found decorating coral reefs around the world. Some of these animals are carnivorous, feeding on corals and scavenging the ocean floor. Certain species of starfish actually extend their stomachs into their unwary victims in order to digest them. The feather stars and sea cucumbers are mainly filter feeders, catching what ever they can find floating in the ocean currents. All of the echinoderms move around with the use of thousands of tiny tube feet, many of which have suction cups on the ends. Many of the urchins have developed extremely sharp spines as a means of protection. Below is a listing of some of the most common reef-dwelling echinoderms.
Size: 1185 chars
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| Page title: | Echinoderms Page 1 - Coral Reef Life on Sea and Sky |
| Keywords: | sea, ocean, reef, coral, coral reef, reef life, marine life, invertebrates, echinoderm, echinoderms, sea cucomber, starfish, urchins, cushion star, sunflower starfish, pacific starfish, orange starfish, short-spined starfish |
| Description: | Sea and Sky's Echinoderms page 1 contains information about the cushion star, sunflower starfish, pacific starfish, orange starfish, and short-spined starfish. |
| IP-address: | 64.234.215.24 |