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Sea urchin

 The sea urchin Diadema setosum before (left) and after (right) mortality. The white skeleton is exposed following tissue disintegration and loss of spines.

Deadly sea urchin epidemic spreads, causes major threat to coral reefs

 A rocky shore.

The benefits of a rocky shore

By ITSIK MAROM
 Fish feeding on a dying D. setosum urchin in the Mediterranean Sea

Mass mortality of sea urchins threatens to destroy Eilat coral reef