This species has been observed on Reunion, Mayotte and Madagascar Islands
Species characteristics :
Superfamily : Haminoeidea
Distribution : Indo-West Pacific
Maximal size (shell) :
Body white, with a brownish headshield and translucent white area around the eyes and a black spot between them
Adult sp (like our specimen) with white patches on the edges of the parapodia and black and white markings along the posterior edge of the mantle, shell brown broad with dark striations throughout
Juvenil sp with brown longitudinal lines on the shell
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Photo Alain-Benoît Rassat
Madagascar, Olaf, 18 m, 6 April 2016, during the night, size : 40 mm
See more about : Sightening and mating periods
Identification confirmed by Raymond Huet and Nathalie Yonow
Synonymous (according worms):
- Atys cymbulus Montfort, 1810 - Bulla naucum Linnaeus, 1758
- Atys ferruginosa (A. Adams, 1850) - Haminoea ferruginosa (A. Adams, 1850)
- Bulla ferruginosa A. Adams, 1850
Bibliographic data :
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.
All species of Atys are herbivores. Under the sand during the day or cruising on the surface at night
Mollusques de l'île de la Réunion. Collection Jay: Atys naucum
SeaSlug Forum Atys naucum
Philippine Sea Slug Atys naucum
Linnaeus, C. (1758) Systema Naturae , Ed. 10. Vol.1.
Other photos of Atys naucum :
Réunion, Shell ref : 291 Collection Maurice Jay
Ovoid almost spherical. Deep spiral grooves over the whole surface, sometimes absent in the middle part.
Live in the sand of 10-20 m. Rare
Maximum height 30.7 mm.
Mayotte, Sakouli lagoon, less 1 m, 16 November 2017
More photos from Indian Ocean
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