HD Starfish Wallpapers

Sea stars are part of an interesting group of animals.

Sea stars are not fish as their nickname "starfish" suggests. They belong to a group of animals called echinoderms, which means "spiny skin." They are related to brittle stars, sea urchins, sea cucumbers, and sand dollars. Sea stars have five arms, or rays, connected to a small round body. Sea stars detect light with five purple eyespots at the end of each arm. The bright orange dot in the center of the body is called the madreporite. This organ pumps water into the sea star's body. This pumping action creates suction at the end of hundreds of tube feet, located in paired rows on the underside of the arms.

Sea stars use suction in the tube feet for movement and feeding. They wrap their bodies around quahogs and other bivalves, using the suction from their tube feet to pull shells apart. When the prey is opened, the sea star pushes its stomach out of its body and into the bivalve, secreting enzymes that digest the prey's soft body tissues. The liquefied bivalve is then absorbed into the stomach. Sea stars feed often, and their size depends on the amount of food they eat, not on their age.

Sea stars, also known as starfish, are easily recognized marine creatures. Despite the nickname “starfish,” the sea star is not a fish at all! These star-shaped animals are surprisingly interesting creatures. Read on to learn about the sea star.

There are over 1,500 different species of sea star, which come in many different shapes and sizes, but all of these animals consist of arms extending from a central disk. In most species, starfish have five arms, giving them a star-shaped appearance. They have spiny skin, and come in many different colors, including shades of red, purple, and yellow.

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** High quality and high definition HD Starfish Wallpaper.

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