Martasteria, spiny starfish (Marthasterias glacialis Linnaeus, 1758) is one of the most common starfish in the Mediterranean Sea, it is an echinoderm of the Asteriidae family. Spiny starfish Martasteria Stella marina spinosa Marthasterias glacialis
In this video we see it lying on a cliff that varies from 41 to 49 meters deep, rich in red Gorgonians of the Paramuricea clavata species and the classic yellow sponges of the Verongia species, therefore a guaranteed show of colors despite the visibility of the water about two or three meters.. Spiny starfish Martasteria Stella marina spinosa Marthasterias glacialis
Martasteria or Spiny starfish, Marthasterias glacialis, is an echinoderm of the Asteriidae family common in the Mediterranean Sea. Also called Stella tank, due to the characteristic plates bristling with thorns that distinguish it from other starfish, it has a regular shape with five arms. The body is characterized by spines of variable colour: white, grey, brown, red, blue. It turns out to be the largest species in the Mediterranean, able to reach even 85 centimeters in diameter.
It lives in the western Mediterranean Sea, on rocky bottoms or in the Posidonia Oceanica meadows up to about 200 meters deep. We met her in the upper Tyrrhenian Sea in a splendid underwater reef at a depth of 48 meters. The reef full of life, as you can see from the video, housed various fish typical of the Mediterranean and a varied marine biology. Marthasterias glacialis can be confused with the starfish Coscinasterias tenuispina, from which, however, it is distinguished by the number of arms and the regularity of the shape; in fact, the variable starfish has an irregular shape and a number of arms ranging from 6 to 12 even if it usually has 7.