The sea cucumbers are Echinoderms belonging to the Holothuroidea class. They are very widespread in the Mediterranean Sea and live in the seabed mixed with sand and rock but also in the muddy seabed. We can find them from a few inches deep to important depths.
The elongated body makes this animal look like a “cucumber”; At one end we find the mouth apparatus and in the other we find the last part of the intestine i.e. the cloaca.
In the lower face there are small stalks that allow the slow movement on the bottom.
The sea cucumbers are feed of animal and vegetable microorganisms that capture swallowing the sand, the mud or the pebbles found on the bottom absorbing the organic material and expelling the rest of the swallowed material.
The sea cucumbers of the Mediterranean have a length that hardly exceeds 30-35 cm. What particular their ability to regenerate; In fact if they are divided into two or three parts each of them is able to recompose the whole animal with all its characteristics.