Juergen Freund / Arrow crab on sponge (Stenorhynchus seticornis) Caribbean

Juergen Freund / Arrow crab on brain coral {Stenorhynchus seticornis} Caribbean Sea, Cuba

Shane Gross / Arrow crab (Stenorhynchus seticornis) on coral. Eleuthera, Bahamas.

Pascal Kobeh / Yellowline arrow crab (Stenorhynchus seticornis / lanceolatus), Canary Islands

Graham Eaton / Yellowline Arrow Crab (Stenorhynchus seticomis) in an Azure Vase Sponge (Callyspongia plicifera). St Lucia, West Indies, July.

Michele Westmorland / Spotted Moray Eel (Gymnothorax moringua) with mouth open, and Arrow crab (Stenorhynchus seticornis) in healthy coral reef system, Dominica, West Indies, Caribbean.

Michele Westmorland / Spotted Moray Eel (Gymnothorax moringua) with mouth open, and Arrow crab (Stenorhynchus seticornis) in healthy coral reef system, Dominica, West Indies, Caribbean.

Chris Newbert / Arrow Crab (Stenorhynchus seticornis) in Anemone (Heteractis sp) 60 feet deep, Caribbean

Doug Perrine / Diver photographs Arrow crab {Stenorhynchus seticornis} on spnge, St Croix, Caribbean

Norbert Wu / Arrow Crab (Stenorhynchus seticornis) long spindly arms around central arrow-shaped body, Caribbean

Constantinos Petrinos / Spotted moray eel {Gymnothorax moringua} and spider crab {Stenorhynchus seticornis} Bonaire, Caribbean

Juergen Freund / Arrow crab (Stenorhynchus seticornis) on fan coral. Caribbean