Tropical Indo-West Pacific.
Rottnest Is, Western Australia. Animal approx 2cm long. PHOTO: Clay Bryce.
Smaller and with a more heavily calcified shell than the other species of Hydatina, this species with its characteristic pink bands outlined in black, is found throughout the tropical Indo-West Pacific. It is reported to feed on cirratulinid polychaete worms (Rudman, 1972).
• Rudman, W.B. (1972) The anatomy of the opisthobranch genus Hydatina and the functioning of the mantle cavity and the alimentary canal. Zoological Journal of the Linnean Society 51(2): 121-139.
Rudman, W.B., 1999 (July 12) Hydatina amplustre (Linnaeus, 1758). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/hydaampl
Mating Hydatina amplustre from Reunion Island
From: Hugues Flodrops, January 9, 2009
Hydatina amplustre from Lau Islands, Fiji
From: Peter Middelfart, October 9, 2007
Hydatina amplustre from Reunion Island
From: Hugues Flodrops, November 14, 2006
Hydatina amplustre from southern New South Wales
From: Debby Lange, April 22, 2003
Hydatina amplustre from South Africa
From: Ernest C.J. Seamark, July 13, 1999