umbrella-shell, bark (Tylodina corticalis)
umbrella-shell, common (Umbraculum umbraculum)
urchin-snail, Cape Pillar (Hebeulima columnaria)
urchin-snail, commensal (Curveulima commensalis)
urchin-snail, Cox’s (Hypermastus coxi)
urchin-snail, indiscrete (Curveulima indiscreta)
urchin-snail, Joshuan (Eulima joshuana)
urchin-snail, Kilcunda (Hebeulima kilcundae)
urchin-snail, large (Eulima augur)
urchin-snail, Legrand’s (Melanella legrandi)
urchin-snail, Loddera’s (Eulima lodderae)
urchin-snail, May’s (Melanella mayi)
urchin-snail, nest-shaped (Melanella cunaeformis)
urchin-snail, nipple (Melanella mamilla)
urchin-snail, obtuse (Curveulima obtusa)
urchin-snail, orthopleura (Melanella orthopleura)
urchin-snail, Petterd’s (Curveulima petterdi)
urchin-snail, pointed-tipped (Hypermastus mucronatus)
urchin-snail, Schouten Island (Melanella schoutanica)
urchin-snail, strengthened (Sabinella munita)
urchin-snail, Tenison’s (Melanella tenisoni)
urchin-snail, tiny (Fusceulima perexigua)
urchin-snail, Tryon’s (Melanella tryoni)