Echinoderms Sea Stars Sand Dollars and Sea Urchins

Echinoderms Sea Stars, Sand Dollars, and Sea Urchins

Characteristics Some things echinoderms have: • No bones, but tough spiny shell like covering • Move with lots of little tiny feet (tube Feet) • They have a heart and simple kind of blood • They reproduce sexually and fertilize externally

* Echinoderms are __________, ______, and _______. * Echinoderm means ________. All echinoderms have spiny skin.

• There are ______ characteristics of echinoderms. • All echinoderms have: • • • Spiny skin An internal skeleton A five part body A water vascular system Tube feet

* All echinoderms have _____. Some of them have small hair-like spines, like the starfish. * Some echinoderms have long spines, like the sea urchin.

* The internal skeleton of an echinoderm is made of ____________. * An echinoderm’s water vascular system is _________________. * The water vascular system also helps an echinoderm _____.

* Echinoderms have _____. * An echinoderm’s tube feet are used for _________________.

* Starfish are also called ______. * Starfish have _____ arms connected to a central body. * On the bottom of the arms are hundreds of ______ that look like suction cups.

* Sea urchins have longer and sharper ____ that they use to protect themselves. * Some sea urchins have ____ spines.

* Sea urchins have a mouth hidden under its body. * A sea urchin uses its five teeth to eat ______. * A sea urchin is not very active. Sometimes, it does move slowly using its _____. When not moving it uses its feet to stick to the ocean floor.

Lots of Sea Stars

Sea Cucumber Eating

Sea Cucumber Poo

The Starfish Dance

A Hungry Sea Star!

A Sand Dollar on the Move

Crinoid- Sea Lily

Members of the Phylum Echinodermata