50 Examples of Echinoderms

The echinoderms or echinodermata they are marine animals invertebrates that have internal skeleton and can have a bilateral or pentarradial symmetry, that is, their body parts are divided into five regions and are located around a center. For example: the starfish, the sea urchin and the sea cucumber.

exist more than 7000 species of echinoderms (and many more species now extinct) and all of them live in the sea, most of the species They are part of the benthos so they crawl and swim on the seabed.

Echinoderms have calcareous plates or spiny granules spread throughout the body. Hence its name: echinoderm, which means "skin that is covered with thorns." The calcareous plates are composed of calcium carbonate and some of them articulate with each other (as in the case of the starfish), while others are welded to form a shell (as in the case of sea urchins). sea).

They are animals They have neither a head nor a brain, yet they can perceive what is happening around them by body cells that collect information from their environment. They also do not have a heart, because their circulatory system is open and they can reproduce sexually or asexually.

Types of echinoderms

Echinoderms can be classified according to their mobility into two main subphiles:

Examples of echinoderms

Sea lilies

1. Davidaster rubiginosus
2. Endoxocrinus parrae
3. Elegant feather star
4. Himerometra robustipinna
5. Lamprometra palmata
6. Celtic leptometra
7. Ptilometra australis
8. Stephanometrist indicates

Sea stars

Ofiuras

Sea urchins

Sea cucumbers

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