Question

Economic important of sea urchin

Answer 1

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Sea urchins are important herbivores on coral reefs, and in some ecosystems they play a critical role in maintaining the balance between coral and algae. Their role can be especially important on reefs where other herbivores (such as parrotfishes and rabbitfishes) have been depleted.

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Answer 2

In their feeding, sea urchins can destroy entire forests of kelp which are commercially and ecologically important for fisheries. They are even more important in that the blades of the kelp can be harvested for algin. Algin is a product that is used in the manufacturing of plastics and paints.