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Patella caerulea (Patellidae)
(https:/
/ar.wikipedia.org/)
 Biota (world)
 Animalia (Reign)
 Mollusca (Branch)
 Gastropoda (Class)
 Patellogastropoda (Underclass)
 Patelloidea (Super-family)
 Patellidae (Family)
 Rotule (Type)
 P. caerulea (Specie)
Main genus representing
in the Mediterranean
-The blue patelle is the most common in
the Mediterranean.
- Its shell, cone-shaped, is flat, fine,
sculpted from strong radial ribs, and
with slightly marked intermediate ribs.
-This cone is often asymmetrical, with
an offset apex on the anterior side.
- It is dirty grey-brown and measures 2
to 4 cm in diameter.
Euraphia depressa
( Chthamalidae)
(https://doris.ffessm.fr/Especes/E
uraphia-depressa)
Biota (Monde)
Animalia (Règne)
Mollusca (Embranchement)
Hexanauplia (Classe)
Thecostraca (Sous-classe)
Chthamaloidea (Super-famille)
Chthamalidae (Famille)
Euraphia (Genre)
Euraphia depressa (Espèce)
Shelf supra -littoral
Lowest on the foreshore
- Appearance of a small flattened
volcano up to 12 mm in diameter.
- Six limestone plates forming the shell.
- Oval-shaped lid, consisting of 4 plates.
- Structure of the operculum forming a
right angle, located at the posterior third.