sad auger (Terebra tristis)

saddle myochama (Myochama anomioides)

saffron tusk-shell (Laevidentalium crocinum)

Saint Aloysius’ top-shell (Clanculus aloysii)

sandy thracidora (Thracidora arenosa)

sandy top-shell (Charisma arenacea)

Saul’s shipworm (Nausitora saulii)

scale-toothed dumpling-squid (Rossia leptodons)

scalloped micromussel (Micromytilus crenatuliferus)

scaly ark-shell (Barbatia reticulata)

scaly boring-venus (Irus crenatus)

scaly lepton (Borniola lepida)

scaly limpet (Scutellastra peronii)

scaly star-shell (Astralium squamiferum)

scaly tusk-shell (Laevidentalium leptosceles)

scar turrid (Austropusilla hilum)

scarred notch-limpet (Tugali cicatricosa)

Schouten false-turrid (Marita schoutenensis)

Schouten Island margin-shell (Mesoginella schoutanica)

Schouten Island necklace-shell (Tasmatica schoutanica)

Schouten Island rice-shell (Attenuata schoutanica)

Schouten Island turrid (Epidirona schoutanica)

Schouten Island urchin-snail (Melanella schoutanica)

Schouten Island whelk (Cumia schoutanica)

scorched auger (Duplicaria ustulata)

scraping-iron turrid (Inquisitor radulaeformis)

scratched necklace-shell (Notocochlis subcostata)

screwshell-like dextral-creeper (Seilarex turritelliformis)

seaweed mussel (Musculus alganus)

secret false eaton-shell (Eatonina condita)

segmented trophon (Apixystus segmentatus)

semiconvex dove-shell (Mitrella semiconvexa)

semigirdled false rice-shell (Badepigrus semicinctus)

semi-smooth false-creeper (Zaclys semilaevis)

serpent scallop (Mesopeplum anguineum)

serrated sea-slug (Phyllodesmium serratum)

shagreened scallop (Semipallium aktinos)

Shepherd’s eaton-shell (Eatoniella shepherdi)

shining false rice-shell (Pisinna nitida)

shining rice-shell (Lucidestea nitens)

shining scallop (Veprichlamys perillustris)

Shoreham’s necklace-shell (Tectonatica shorehami)

short aclidid-shell (Austrorissopsis consobrina)

short bubble-shell (Liloa brevis)

short myadora (Myadora brevis)

short top-shell (Austrocochlea brevis)

shortened chiton (Ischnochiton contractus)

short-tailed sea-slug (Ceratosoma brevicaudatum)

shrubby sea-slug (Digidentis arbuta)

Sicilian squid (Ctenopteryx siculus)

sickle-shaped chiton (Ischnochiton falcatus)

similar rice-shell (Powellisetia simillima)

simple nutmeg-shell (Pepta simplex)

simple pyramid-shell (Syrnola simplex)

simple trophon (Enatimene simplex)

single-grooved rice-shell (Lironoba unilirata)

sinistral top-shell (Astele incertum)

six-ribbed rock-whelk (Sassia sexcostata)

slender lantern-shell (Laternula laterna)

slender sea-slug (Embletonia gracilis)

slender thorny-oyster (Spondylus tenellus)

sloping cap-shell (Capulus devexus)

sloping screw-shell (Gazameda declivis)

small air-breather (Marinula parva)

small limpet (Naccula parva)

small margin-shell (Pugnus parvus)

small sea-hare (Aplysia parvula)

smallest false-top-shell (Lodderena minima)

Smith’s dove-shell (Anachis smithi)

smoky venus (Eumarcia fumigata)

smooth chiton (Callochiton crocinus)

smooth mitre (Mitra glabra)

smooth rice-shell (Pusillina mediolaevis)

smooth-toothed triangle (Anapella cycladea)

snakeskin chiton (Sypharochiton pelliserpentis)

snowy rice-shell (Rissoina nivea)

snowy sinistral-creeper (Isotriphora nivea)

solid air-breather (Phallomedusa solida)

solid dove-shell (Aesopus solidus)

solid lepton (Marikellia solida)

sounding-lead trophon (Ollaphon molorthus)

southern air-breather (Phallomedusa austrina)

southern blue-ringed octopus (Hapalochlaena maculosa)

southern bonnet-limpet (Hipponix australis)

southern bottletail-squid (Sepiadarium austrinum)

southern calamari (Sepioteuthis australis)

southern chiton (Ischnochiton australis)

southern crypt-dweller (Hiatella australis)

southern date-shell (Solemya australis)

southern dove-shell (Mitrella austrina)

southern dumpling-squid (Euprymna tasmanica)

southern ear-cowrie (Lamellaria australis)

southern false-olive (Zemira australis)

southern false-turrid (Guraleus australis)

southern gaper (Panopea australis)

southern gouldia (Gouldia australis)

southern keeled octopus (Octopus berrima)

southern lasaea (Lasaea australis)

southern liotia (Austroliotia australis)

southern mitre (Vexillum australe)

southern mud-creeper (Velacumantus australis)

southern pygmy-squid (Idiosepius notoides)

southern razor-shell (Solen vaginoides)

southern ribbed-cowrie (Ellatrivia merces)

southern rice-shell (Lironoba australis)

southern sand octopus (Octopus kaurna)

southern screw-shell (Colpospira australis)

southern sea-lemon (Rostanga australis)

southern sea-slug (Runcina australis)

southern shipworm (Bankia australis)

southern slit-shell (Anatoma australis)

southern trough-shell (Mactra australis)

southern volute-mitre (Microvoluta australis)

southern wentletrap (Opalia australis)

southern white-spot octopus (Octopus bunurong)

southern worm-shell (Tenagodus australis)

Sowerby’s volute (Ericusa sowerbyi)

speckled top-shell (Herpetopoma aspersa)

Spengler’s rock-whelk (Cabestana spengleri)

Spicer’s tulip-shell (Dolicholatirus spiceri)

spiky dove-shell (Exomilopsis spica)

spiky sinistral-creeper (Teretriphora spica)

spindle-shaped olive (Amalda petterdi)

spiny false-top-shell (Cyclostrema spinosa)

spiral sea-butterfly (Limacina helicina)

spirally-chorded sea-slug (Burnaia helicochorda)

spireless peanut-shell (Adamnestia arachis)

splashed false-cockle (Venericardia bimaculata)

sponge sea-slug (Noumea haliclona)

spoon-shaped nut-shell (Poroleda spathula)

spotted alaba (Alaba monile)

spotted sea-slug (Pleurobranchaea maculata)

squared liotia (Munditia subquadrata)

square-mouthed false-creeper (Ataxocerithium serotinum)

staged nutmeg-shell (Vercomaris pergradata)

stepped venus (Katelysia scalarina)

stopped false-creeper (Tubercliopsis cessicus)

Stow’s siphon-shell (Pugillaria stowae)

straight turrid (Austrocarina recta)

Strange’s file-shell (Limatula strangei)

Strange’s margin-shell (Mesoginella strangei)

Strange’s mitre (Domiporta strangei)

Strange’s rice-shell (Alvania strangei)

Strange’s watering-pot (Humphreyia strangei)

streaky coxiella (Coxiella striata)

streaky fleshy-chiton (Cryptoplax striata)

strengthened urchin-snail (Sabinella munita)

striped chiton (Ischnochiton virgatus)

striped conniwink (Bembicium nanum)

striped top-shell (Austrocochlea porcata)

strong wentletrap (Cirsotrema valida)

Studdert’s assiminea (Conassiminea studderti)

stylish pyramid-shell (Leucotina casta)

sublateral globe-shell (Felaniella sublateralis)

subradiate condyl-clam (Cunanax subradiata)

sulphurous sea-slug (Noumea sulphurea)

sundial top-shell (Fluxinella trochiformis)

superb notch-limpet (Emarginula superba)

sutured diala (Diala suturalis)

swan-like sea-slug (Armina cygnea)

sweet false-turrid (Filodrillia dulcis)

swollen bubble-shell (Nipponatys tumidus)

swollen canoe-shell (Retusa protumida)

swollen false rice-shell (Pisinna tumida)

swollen pheasant-shell (Phasianella ventricosa)

swollen rice-shell (Onoba pertumidus)

swollen seastar-snail (Melanella inflata)

Sydney rock-oyster (Saccostrea cucullata glomerata)

Sydney sea-hare (Aplysia sydneyensis)