| A | B |
|---|
| crustacean | an animal whose body is covered by a hard shell |
| exoskeleton | the hard shell that covers a crustacean's body |
| carapace | the hard shell that covers the crab's body |
| chelae | modified legs with pincerlike claws |
| crepuscular | animal that feed in teh morning and evening at twilight |
| coldblooded | animals that change their body temperature with the environment |
| scavenger | animals that feed on dead and decaying organisms |
| feeding claws | these claws push sand, mud, and food inside the mouth |
| eye stalk | acts like a periscope and moves the eyes up and down |
| semiterrestrial | living part-time on land and in water |
| marsh | the type of habitat needed by a fiddler crab |
