Adams’ globe-shell (Numella adamsi)

Adcock’s helmet (Semicassis adcocki)

addenda chiton (Notoplax addenda)

Adelaide thyasira (Thyasira adelaideana)

Adelaide top-shell (Chlorodiloma adelaidae)

admirable squid (Histioteuthis miranda)

Agnew’s rice-shell (Onoba agnewi)

Albany top-shell (Clanculus albanyensis)

Allport’s margin-shell (Dentimargo allporti)

Allport’s top-shell (Calliostoma allporti)

almond triangle (Anapella amygdala)

alternate sea-slug (Chromodoris alternata)

alternating margin-shell (Cystiscus alternans)

ambiguous false-turrid (Exomilus dyscritos)

amethyst sinistral-creeper (Isotriphora amethystina)

analog ribbed-mitre (Austromitra analogica)

ancient chiton (Callistochiton antiquus)

anemone cone (Conus anemone)

Angas’ bubble-shell (Philine angasi)

Angas’ chiton (Loricella angasi)

Angas’ lantern-shell (Periploma angasi)

Angas’ lepton (Mysella angasiana)

Angas’ margin-shell (Cystiscus angasi)

Angas’ murex (Prototyphis angasi)

Angas’ pyramid-shell (Syrnola angasi)

Angas’ rice-shell (Rissoina angasi)

Angas’ sinistral-creeper (Monophorus angasi)

Angas’ spoon-shell (Cuspidaria angasi)

Angas’ turrid (Austrodrillia angasi)

Angas’ vanikoro (Naricava angasi)

Angel’s false-top-shell (Brookula angeli)

angled jingle-shell (Anomia trigonopsis)

angled vanikoro (Naricava angulata)

Angolan squid (Todarodes angolensis)

angular lepton (Lepton trigonale)

angular rice-shell (Pusillina angulata)

anomalous false-turrid (Macteola anomala)

Antarctic squid (Gonatus antarcticus)

ant-like margin-shell (Austroginella formicula)

approximate false rice-shell (Pisinna approxima)

araois trophon (Pagodula araois)

arborescent sea-slug (Dendrodoris arborescens)

Arch rice-shell (Attenuata archensis)

Arnold’s sea-slug (Gymnodoris arnoldi)

arrowed necklace-shell (Tanea sagittata)

Asian bag-mussel (Musculista senhousia)

Asian semele (Theora lubrica)

Atkinson’s canoe-shell (Retusa atkinsoni)

Atkinson’s condyl-clam (Ovacuna atkinsoni)

Atkinson’s dove-shell (Anachis atkinsoni)

Atkinson’s rice-shell (Lucidestea atkinsoni)

Atkinson’s screw-shell (Colpospira atkinsoni)

Atkinson’s slit-shell (Sinezona atkinsoni)

Atlantic chiton (Placiphorella atlantica)

Atlantic squid (Histioteuthis atlantica)

attendant auger (Terebra assecla)

attractive peanut-shell (Scaphander illecebrosus)

attractive sea-slug (Ceratosoma amoenum)

austral dumpling-squid (Rossia australis)

austral sea-slug (Melibe australis)

Australasian rock-whelk (Ranella australasia australasia)

Australian angel-wing (Pholas australasiae)

Australian rice-shell (Onoba australiae)

Australian tulip-shell (Pleuroploca australasia)

axe-head mussel (Limnoperna securis)

axiaerate dove-shell (Mitrella axiaerata)

Ayres’ sand-snail (Polinices ayresi)