Kapala’s scallop (Cyclopecten kapalae)
keeled chiton (Ischnochiton carinulatus)
keeled top-shell (Clanculus limbatus)
kelp chiton (Acanthochitona macrocystialis)
Kengraham’s whelk (Buccipagoda kengrahami)
Kenyon’s sunset-shell (Gari kenyoniana)
Kershaw’s assiminea (Cryptassiminea kershawi)
Kershaw’s false rice-shell (Pisinna kershawi)
Kesteven’s notch-limpet (Puncturella kesteveni)
Kiener’s auger (Duplicaria kieneri)
Kilcunda urchin-snail (Hebeulima kilcundae)
Kimber’s chiton (Acanthochitona kimberi)
King Island argalista (Argalista kingensis)
King Island false-turrid (Antiguraleus kingensis)
King Island kelp-shell (Alcyna kingensis)
King Island sea-elephant (Pterotrachea kingicola)
King Island thickshell-clam (Eucrassatella kingicola)
King Island whelk (Tasmeuthria kingicola)
King Island winkle (Macquariella kingensis)
king scallop (Pecten fumatus)
King’s callista (Callista kingii)
knobbly paper-nautilus (Argonauta nodosus)
knobbly rock-shell (Phycothais reticulata)
kulonba sea-slug (Digidentis kulonba)