Sea Stars
An introduction to sea stars, including one that’s a metre wide! Biology - Animal Kingdom - Learning Points. Sea stars are a type of echinoderm. All adult echinoderms have radial symmetry, which means their body parts are arranged around a central axis. Sea stars feed by pushing their stomachs out through their mouths. With a diameter of up to 1 metre, the sunflower sea star is the largest species of sea star in the world. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.
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