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In this page, navigate the different phylums, view the pictures in the various galleries and click on a species to get detailled information about it. Then consult the phylum descriptions and access recent classifications to discover marine flora and fauna of Western Europe.

For a direct access to the detailled information sheets about a species, you may also use our Species search. For an effective consultation, you have to know the common name or the scientific name of the species you are looking for.

Phylum Porifera.


  • Sessile.
  • Anatomy difficult to describe.
  • Soft texture to the touch.

Phylum Cnidaria.


  • Sessile (polyp stage) or free swimming (medusa stage).
  • Resemble a vegetal, a flower, a bush.
  • Have sticking and stinging tentacles.

Phylum Platyhelminthes.


  • Free animals.
  • Flat elongated body.
  • No gills, no segments.

Phylum Annelida.

Annelids and Echuirians

  • Free or sessile animals.
  • Segmented wormshaped body.
  • Sessile worms with a crown of radioles.

Other worms.

Other worms: Nemerteans, Sipunculans, Echiurans

  • Free animals
  • Unsegmented vermiform body.

Phylum Bryozoa.


  • Sessile animals.
  • Colonial.
  • Encrusting or erected colonies.

Phylum Phoronida.


  • Sessile animals.
  • Little crown of radioles (lophophora).
  • Wormshaped body.

Phylum Arthropoda.


  • Free or sessile animals.
  • Segmented body.
  • Articulated legs.

Phylum Echinodermata.


  • Generally five radial pattern.
  • Rough or spiny body.

Subphylum Tunicata.


  • Free swimming or sessile animals.
  • Encrusting, globular or cylindrical body.
  • No skeleton or calcification.

Red seaweeds.

Red seaweeds (Rhodophyta)


Green seaweeds.

Green seaweeds (Chlorophyta)


Brown seaweeds.

Brown seaweeds (Phaeophyta)

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