Caribbean spiny lobster 
Caribbean Velvet Shrimp 
Carrier crab 
Cavipes Hermit Crab 
Charybdis granulata 
Chasmagnathus 
Cherax quadricarinatus 
Chirostylus sandyi 
Christmas Island red crab 
Cinetorhynchus reticulatus 
Clear Cleaner Shrimp 
Clibanarius erythropus 
Coconut crab 
Coenobita perlatus 
Coenobita rugosus 
Coleman's Bubble Coral Shrimp 
Colorful Reef Crab 
Common Box Crab 
Common Hairy Crab 
Common littoral crab 
Common Marble Shrimp 
Common Moon Crab 
Common prawn 
Conical Spider Crab