Ass's-ear abalone 
Asteronotus cespitosus 
Asteronotus mimeticus 
Atagema intecta 
Atagema spongiosa 
Atlantic Black Seahare 
Atopos rugosus 
Australian Pheasant 
Baeolidia moebii 
Baiaplecta lowi 
Balkan Threeband Slug 
Banded bonnet 
Banded Periwinkle 
Barnacle-eating Dorid 
Bat volute 
Batangas Halgerda 
Batwing slug 
Beaded lancetooth 
Beau Vallon Magnificent Slug 
Beddomea albizonatus 
Berthellina citrina 
Big Auger 
Black Blob 
Black Nerite