Muraena helena - Echinaster sepositus - Stylocidaris affinis

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In this immersion of 08/27/2016 we can see specimens of various species take rather common in the Mediterranean, have come together in the beginning, “Sabella spallanzanii” more commonly called Mediterranean fanworm is a polychaete annelid canalipalpato of the sabellidae family while suddenly portrays a once it detects the presence of the diver. Muraena helena Echinaster sepositus Stylocidaris affinis

Mediterranean moray Muraena helena, is a marine bony fish belonging to the family Muraenidae, defensively after an initial phase of curiosity.

murena_04

The common and omnipresent Red starfish, “Echinaster sepositus which is an echinoderm of echinasteridae family, very common in the Mediterranean Sea.  Muraena helena Echinaster sepositus Stylocidaris affinis 

 

Echinaster sepositus

The red starfish (Echinaster sepositus Retzius, 1783) is an echinoderm of the Echinasteridae family, very common in the Mediterranean Sea.

Features
Typical bright red color, darker on the back and lighter below. Five arms of equal length, characterized by small depressions.

Maximum size of 30 centimeters.

Distribution
Common throughout the Mediterranean Sea up to 200 meters deep, it can be found both along the surface of rocks and among seagrass meadows, however not at temperatures above 22 ° C.

The inevitable Anthias anthias along with various species of Wrasses and Sparids.

And finally the “Stylocidaris affinis, commonly known as Red lance urchin, is an echinoderm of cidaridae family.

Stylocidaris affinis – Riccio matita

Stylocidaris affinis (Philippi, 1845), commonly known as pencil hedgehog, is an echinoderm of the Cidaridae family.

Description
Spines very evident, thick, well spaced, as long as the diameter of the body, yellow to red in color, which can reach 5 centimeters.

Biology
It feeds on bryozoans, molluscs, foraminifera.

Distribution and habitat
Mediterranean Sea and Atlantic Ocean, on coralligenous or detrital bottoms, from about 30 meters deep (except for some locations, such as Pantelleria or in the caves of Alghero, where it is sometimes found even at surface levels) up to 1000 meters. It is possible to find it along the docks of the ports left by fishermen who clean up the nets where they often get entangled.

 

https://en.wikipedia.org/wiki/Mediterranean_moray

https://en.wikipedia.org/wiki/Echinaster_sepositus

https://it.wikipedia.org/wiki/Stylocidaris_affinis

Informazioni sull'autore / About the author:
Andrea Cirivasi Andrea Cirivasi ha scritto / wrote 207 articoli / Posts.
Questo articolo è stato scritto il / This article was written on 12/09/2016
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