Benthochascon schmitti
Geryonidae
Benthoctopus januarii
Bathypolypodidae
Berthellina quadridens
Pleurobranchidae
Bhawania heteroseta
Chrysopetalidae
Bineurus cumingii
Unionidae
Bittium reticulatum
Cerithiidae
Boguea enigmatica
Maldanidae
Boreosignum wilsoni
Paramunnidae
Bornella calcarata
Bornellidae
Botula fusca
Modiolidae
Bowmaniella bacescui
Mysidae
Bowmaniella sewelli
Mysidae
Brachidontes domingensis
Mytilidae
Brachycarpus biunguiculatus
Palaemonidae
Branchioasychis americana
Maldanidae
Branchiostoma caribaeum
Branchiostomatidae
Brania gallagheri
Syllidae
Brania wellfleetensis
Syllidae
Brissopsis elongata
Brissidae
Brotia costula
Pachychilidae