Abdopus aculeatus 
Acavus haemastoma 
Aclyvolva lanceolata 
Aegires villosus 
Albatross Aglaja 
Aliger gigas 
Allied cowrie shell 
Amphidromus hamatus 
Amphidromus martensi 
Anna's Chromodoris 
Aplysia reticulata 
Ardeadoris cruenta 
Arianta arbustorum 
Arion hortensis 
Armina magna 
Armina neapolitana 
Asian Clam 
Ass's-ear abalone 
Asteronotus cespitosus 
Asteronotus mimeticus 
Atagema spongiosa 
Atlantic bay scallop 
Atlantic calico scallop 
Baeolidia moebii