icarus creeper (Cacozeliana icarus)
immaculate turrid (Paracuneus immaculatus)
imperforate rissoella (Rissoella imperforata)
imperial sea-slug (Plocamopherus imperialis)
impoverished dog-whelk (Nassarius pauperatus)
Ince’s sand-snail (Polinices incei)
incised false-turrid (Nepotilla bathentoma)
incised notch-limpet (Emarginula incisura)
inconspicuous margin-shell (Mesoginella inconspicua)
incrusted false-turrid (Guraleus incrustus)
indignant sea-slug (Melanochlamys queritor)
indiscrete margin-shell (Cystiscus indiscretus)
indiscrete urchin-snail (Curveulima indiscreta)
inflated globe-shell (Felaniella globularis)
inflexed sea-butterfly (Cavolinia inflexa)
inscribed false-top-shell (Zalipais inscriptum)
interrupted dove-shell (Anachis interrupta)
irawaddy-like false rice-shell (Microdryas iravadioides)
Iredale’s fleshy-chiton (Cryptoplax iredalei)
Iredale’s orbitestellid (Orbitestella iredalei)
Iredale’s screw-shell (Gazameda iredalei)
irridescent venus (Venerupis iridescens)
irritable rock-whelk (Sassia petulans)
ivory false-top-shell (Crossea concinna)
ivory murex (Phyllocoma eburnea)
ivory whelk (Cominella eburnea)