Lisa's Mantis Shrimp 
Long-wristed Hermit Crab 
Lophozozymus pulchellus 
Luminous shrimp 
Lumpy Claw Crab 
Lupocyclus philippinensis 
Lysiosquilla sulcirostris 
Lysiosquilloides taiwanica 
Lysmatella Shrimp 
Madagascan Land Crab 
Madagascar Blue Crayfish 
Madagascar Freshwater Crayfish 
Magnificent Anemone Shrimp 
Maja squinado 
Mangrove root crab 
Mangrove tree crab 
Manipontonia psamathe 
Marbled rock crab 
Marine Pill Bug 
McLane’s Cave Crayfish 
Mediterranean Slipper Lobster 
Mesoniscus graniger 
Miami cave crayfish 
Moon crab