Shrimp belong to the group of crustaceans known as Caridea. In all carideans the body comprises a thorax covered by a carapace and a muscular abdomen. Two of the five pairs of legs end in claws. Shrimp are most frequently seen wandering on the surface of rocks in rock pools but others burrow in sediments; hide between the fronds of algae, or swim in the mid-water of the oceans. Many shrimp are brightly colored; others take on the colors of their habitat, but is certain that most shrimp are scavengers & others are active predators.