Spined Fiddler Crab 
Spiny Lithode Crab 
Spotted cleaner shrimp 
Spotted moon crab 
Spotted Spiny Lobster 
Starfish shrimp 
Stenopus tenuirostris 
Stenorhynchus debilis 
Stoliczia stoliczkana 
Strengeriana huilensis 
Striped bumblebee shrimp 
Striped Coral Hermit Crab 
Striped shore crab 
Sundathelphusa longipes 
Surf Crab 
Swift Woodlouse 
Swiss Red-Eye 
Synalpheus stimpsonii 
Ternate Cleaner Shrimp 
Thai Vinegar Crab 
Thaumastocaris streptopus 
Thelphusula cristicervix 
Thick-legged Fiddler Crab 
Tiger pistol shrimp