Coelenterates. Invertebrates Animal Kingdom. wildlife. Fauna. Zoology. Fauna. Natural Patrimony Aragonese. Aragon. Spain.

Coelenterates. Invertebrates Animal Kingdom. wildlife. Fauna. Zoology.

Aragon > Naturräume in Aragon > Fauna

The Coelenterates are very primitive organisms and of a great simplicity.
There are more than 4,500 species of very varied forms, they are marine animals and therefore without presence in Aragon.

They have radial symmetry and the body is formed by two layers of cells, one external or ectoderm, which is attached to another inner layer or endoderm, through an intermediate layer jelly-like called mesoglea.

These animals, gelatinous in appearance, are mainly composed of water (90%).

A characteristic of the censorereos is the presence of stinging cells called nematocysts. Celentéreos have two different forms:  one fixed, the polyp, and the other mobile, the jellyfish.

The stinging cells of the censorereos, called nematocysts, have a sensitive cilia that, with the slightest rubbing, causes a filament to shoot with great force with numerous thorns with which they inoculate poison, capable of paralyzing small animals.

Types of censorereos

The celentéreos are divided into the following classes:



Other information about fauna in Aragón:

A small list of species in Aragon would be the following:

Vertebrates Invertebrates

Mammals

Birds

Reptiles

Amphibians

Fishes

Metazoans

Protozoa

   images about the fauna in Aragon.
   photographs on invertebrates.
   beneficial animals for agriculture.