• They are echinoderms.

• They are of many colours.

• There are about seven thousand species.

• They live for about thirty-five years.

• Most of them have got five legs but some starfish have up to twenty-two legs.

• They´ve got their mouth in the centre of the body.

• They are invertebrates.

• They have rough skin.

• They live normally in the ocean, sea…

• They eat mollusks, clams, oysters, snails, or any other animal too slow to evade the attack .

• When he breaks a leg it grows a new one.

• They can’t walk.

• They can swim.

http://www.youtube.com/watch?v=4dkieg7F37c

• http://www.bbc.co.uk/nature/wildfacts/factfiles/418.shtml

• http://mundosalvaje.net/?p=253

• http://es.wikipedia.org/wiki/Asteroidea