Gasflame Tentacle Aeolid 
Gastropteron bicornutum 
Geographic sea hare 
Geography cone 
Geometric Goniobranchus 
Giant Chiton 
Giant clam 
Giant False Limpet 
Giant honeycomb oyster 
Giant Mangrove Whelk 
Giant Seahare 
Giant spider conch 
Giant Thorny Oyster 
Girdled Snail 
Globose Dome Snail 
Globovula cavanahi 
Gloomy Nudibranch 
Glossodoris buko 
Glossodoris cincta 
Glossodoris pallida 
Golden Cuttlefish 
Golden Wanteltrap 
Goniobranchus daphne 
Goniobranchus gleniei