| Description: |
Coral reefs provide habitat and nurseries for as much as a quarter of all ocean species, but they face many natural predators, from sea snails to starfish. Fortunately for the Pocillopora corals in the Indo-Pacific, coral guard crabs come to the rescue. As small as 4 millimeters wide, the crustaceans make their homes in the corals and fiercely defend their hosts in exchange for food and shelter. [Source: Science / AAAS]
|
 |
