Neopetrolisthes maculatus 
Neostylodactylus litoralis 
Nimble spray crab 
Northern cleaner shrimp 
Northern lame crab 
Norway Lobster 
Ocellated Tozeuma Shrimp 
ocypode brevicornis 
Oklahoma cave crayfish 
Olivar's Squat Lobster 
Orang-utan crab 
Oregonia gracilis 
Ornamental Spider Crab 
Ornate anemone shrimp 
Paguristes frontalis 
Pagurus prideaux 
Painted ghost crab 
Pallid ghost crab 
Panulirus ornatus 
Parhippolyte misticia 
Peacock-tail Anemone Shrimp 
Pebble Crab 
Penang Hill Vampire Crab 
Periclemenes colemani