Today, we are gonna learn about Echinoderms.
There are sea urchins, starfish, brittle stars, feather stars, sea cucumbers, and sand dollars. But sometimes when a Echinoderms part come off, then it will grow a new one. Sea urchins really do eat algae and feather stars eat tiny drifting organisms and particles moreover some eat dead, decomposing animals and plants. Echinoderms are only found in salt water. Sea cucumbers can live about 5 years also sea stars can live up to 35 years and sea urchins can live up to 100 years or more!