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Aplustridae 1 species (1 shell)

Phylum      : Mollusca
 Class       : Gastropoda 
  Subclass    : Heterobranchia 
   Infraclass  : Euthyneura 
    Subterclass : Acteonimorpha 
     Superfamily : Acteonoidea 
      Family      : Aplustridae 

Common name : bubble snails

Aspect : shell in the shape of an oval bubble with a sunken spire. The shells are lightweight, and decorated with a conspicuous pattern of spiral brown or black lines. Comma shaped opening, as long as the shell. The columella has a callus without folds. The shell is extremely thin. No seal

Feeding : polychaetes worms, mussels and slugs

Environment : tropical waters (and Portugal)

Hydatina physis (Linnaeus, 1758)

Hydatina physis
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