Question

Why are echinoderms important to the marine environment?

Answer 1

Echinoderms play numerous ecological roles. Sand dollars and sea cucumbers burrow into the sand, providing more oxygen at greater depths of the sea floor. This allows more organisms to live there. In addition, starfish prevent the growth of algae on coral reefs

Answer 2

Echinoderms are important to the marine environment because they are part of the ocean food chain keeping seaweed in check as grazers and serving as food.