Common herbivorous bubble shell found throughout the tropical Indo-West Pacific region.
UPPER: Pointe de Pandop, near Koumac, New Caledonia, 1 m, intertidal, hard substrate, algae, 19 October 1993, 38mm long shell, AM C200533. LOWER: Juvenile, with brown lines. Channel between Récif de l'Infernet & Barrier Reef, off Koumac, New Caledonia, 12m, In lagoon, grey sand, coral slabs , 20 October 1993, 1 specimen, AM C200564. PHOTOS: Bill Rudman.
Atys naucum is the large inflated white bubble shell found in tropical waters. The brown colour of the shell of living animals is a thin periostracum covering the shell. It soons dries and flakes off when the animal dies. In juveniles there are often sinuous thin brown lines across the shell. All species of Atys are herbivores.
• Linnaeus, C. (1758) Systema Naturae, Ed. 10. Vol.1.
Rudman, W.B., 1998 (December 18) Atys naucum (Linnaeus, 1758) . [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/atysnauc
Atys ehrenbergi from the Red Sea
From: Binyamin Koretz, May 4, 2005
Juvenile Atys naucum from the Philippines
From: Erwin Koehler, March 27, 2002
Atys from Sulawesi
From: Lindsay Warren, January 26, 2001
Atys naucum gizzard plates
From: C. Carlson & P.J. Hoff, December 23, 1999
Erwin's Atys sp. is Atys naucum
From: Terry Gosliner, January 20, 1999
Atys?, Haminoea? from Red Sea
From: Erwin Koehler, January 19, 1999