Variable spiny starfish Coscinasteris s082
19
03:12

Variable spiny starfish

The Variable spiny starfish (Coscinasterias tenuispina) is called this because instead of the classic five arms it usually has seven. It is therefore an exception regarding the classic five-ray symmetry of echinoderms. Furthermore, as can be seen in this specimen, three of the seven arms are very small and are therefore slowly growing back. ...
Red starfish Echinaster sepositus-16h58m11s527
12
02:25

Red starfish

Finding a starfish is one of the first experiences a diver can have, especially the Red starfish - Echinaster sepositus - one of the many species among the most common in the Mediterranean Sea. It is one of the first encounters, but even the most experienced divers always find this species of echinoderm fascinating. However, when they meet, some precautions must be taken to avoid causing damage to these splendid starfish. Surely picking them up with some care, handling them and forcibly removing them from the substrate on which they are located can lead to damage ...
Spiny starfish Stella marina spinosa-2023-07-17-17h28m41s252
15
06:50

Spiny starfish Martasteria

Martasteria or Thorny starfish (Marthasterias glacialis Linnaeus, 1758) is one of the most common starfish in the Mediterranean Sea, it is an echinoderm of the Asteriidae family. 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 at the expense, however, of the visibility of the water about two or three meters. ...
vlcsnap-2022-03-16-11h16m43s348
15
04:37

Spiny Starfish - Tank Star

The Martasteria or Spiny Starfish, Marthasterias glacialis, is an echinoderm of the Asteriidae family common in the Mediterranean Sea. Also called a Tank star, 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 color: white, gray, brown, red, blue. It appears to be the largest species in the Mediterranean, capable of reaching even 85 centimeters in diameter.
vlcsnap-2021-11-03-12h10m05s880
27
04:39

Purple Starfish

The Purple Starfish, is a species of starfish from the East Atlantic (from mainland Portugal and the Azores down to the Gulf of Guinea) and the Mediterranean Sea. It has a big variation in colour (from red to orange) and may present brown spots. The central disc is small, covered by irregular plates, and the arms are thinner near the central disc. Each arm has lines of respiratory papillae. It can reach 40 cm in diameter.
vlcsnap-2021-01-15-11h56m24s577
21
03:11

Basket Star

The Basket Star is characterized by five tentacles, each branched several times, with which it clings to the branches of the soft corals and which are opened at night to feed on. The body has a diameter that can reach 8 centimeters, with the complete opening of the tentacles the maximum width of the entire animal can reach 80 centimeters. It feeds passively with the open tentacles, in particular of planktonic microparticles.
vlcsnap-2021-11-05-20h51m36s915_T
10
11:11

Sea urchin reproduction

Also this summer we met some sea urchins all piled in one place. We therefore think we have filmed again the reproduction of  Sphaerechinus granularis. Like other echinoderms, sea urchins reproduce in the summer ...
Missing Island L’Isola mancata www.intotheblue.it-2021-08-17-11h04m06s568
10
17:02

Missing Island

Missing Island is a shoal halfway between the Island of Gorgona and Livorno. The shoal has two summits a couple of miles apart which rise to a depth of about 36 and 46 meters, from a depth of 80 meters on the side of Livorno and over 120 meters on the side of the Island of Gorgona ...
vlcsnap-2019-11-08-11h17m21s225
12
01:19

Purple sea Urchin

Sphaerechinus granularis is a species of sea urchin in the family Toxopneustidae, commonly known as the purple sea urchin. Its range includes the Mediterranea Sea and eastern Atlantic Ocean. ...
vlcsnap-2019-12-29-20h53m40s407
0

Simmetria e organismi marini

Simmetria in biologia è la distribuzione equilibrata di parti del corpo duplicati o forme all'interno del corpo di un organismo. In natura e biologia, la simmetria è sempre approssimata. La simmetria crea una classe di modelli in natura ...
vlcsnap-2020-05-13-18h07m38s589
20
02:07

The blue spiny starfish

Coscinasterias tenuispina is a starfish in the family Asteriidae. It is sometimes called the blue spiny starfish or the white starfish. It occurs in shallow waters in the Atlantic Ocean and the Mediterranean Sea. Coscinasterias tenuispina has from 6 to 12 arms (usually 7), often of varying lengths, ...
Carlo-Terreni-dorsale-fuori-Livorno-1024×576
12
02:48

Ridge outside Livorno

We are in a stretch of sea between Livorno and the island of Gorgona, off the island of Gorgona at a depth of between -62m. -67m. The seabed is typical of the Mediterranean Sea at high depths ...
La Stella Gorgone – The Basket Star – Astrospartus mediterraneus – intotheblue.it – vlcsnap-2019-11-27-10h10m19s383
8
01:53

Basket Star

The Basket Star (Astrospartus mediterraneus), (Risso,1826) is a echinoderm belongs to the phylum Echinodermata, to the Ophiuroidea class, Gorgonocephalidae family. ...