List of molluscs of the Houtman Abrolhos
This list of molluscs of the Houtman Abrolhos includes 492 species of marine molluscs which have been recorded from the waters of the Houtman Abrolhos, an island group in the Indian Ocean off the coast of Western Australia.
These molluscs are predominantly gastropods and bivalves ; the remaining 5% of species consist of cephalopods, chitons and scaphopods.
About two thirds of the species have a tropical distribution, temperate species account for 20%, and the remaining 11% are endemic to Western Australia.;Spirulidae
;Sepiidae
- Sepia chirotrema
- Sepia cultrata
- Sepia irvingi
- Sepia novaehollandiae
- Sepia papuensis
- Sepia apama
;Sepiadariidae
;Sepididae
;Loliginidae
- Loligo chinensis
- Sepioteuthis lessoniana
;Octopodidae
- Hapalochlaena cf. maculosa
- Hapalochlaena lunulata
- Octopus flindersi
;Ischnochitonidae
;Cryptoplacidae
- Cryptoplax hartmeyeri
- Cryptoplax striata
;Chitonidae
;Dentaliidae
- Dentalium elephantinum
- Dentalium formosum
- Dentalium bisexangulatum
;Solecurtidae
