The Pocilloporid Crab (Trapezia spp.) lives inside colonies of the coral Pocillopora. They defend their territories aggressively, and feed off the nutritious mucus of the coral. Here, a crab is seen facing the transparent body of a little shrimp (Ancylomenes spp.) that also lives in this coral colony.

by Shreya Yadav

The Pocilloporid Crab (Trapezia spp.) lives inside colonies of the coral Pocillopora. They defend their territories aggressively, and feed off the nutritious mucus of the coral. Here, a crab is seen facing the transparent body of a little shrimp (Ancylomenes spp.) that also lives in this coral colony.