European Sand Hopper 
European Spiny Lobster 
Everglades Crayfish 
Feather Star Commensal Shrimp 
Fine-striped Snapping Shrimp 
Fingerprint Shrimp 
Flame Box Crab 
Flaming Reef Lobster 
Flat Rock Crab 
Flathead lobster 
Flattop crab 
Floral Egg Crab 
Florida Cave Crayfish 
Forceps Fiddler Crab 
Four-Lobed Porcelain Crab 
Frog crab 
Funchalia villosa 
Galathea balssi 
Gaomard's Hermit Crab 
Geosesarma batak 
Geosesarma danumense 
Ghost Shrimp 
Giant Canyon Woodlouse 
Giant Isopod