14

02:19

Cushion sea star Culcita schmideliana

Cushion sea star, Culcita schmideliana, commonly known as the spiny cushion star, is a species of pin-cushion star which looks more like a hedgehog without its spines than the starfish we generally know. It has a variety of base colors and often patches of a different color. It is pentagonal in shape and lives in the tropical Indo-Pacific.

Stefano

December 3, 2024

26

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23

05:16

Invasion of Stylocidaris affinis

I did the underwater video in a stretch of sea between Livorno and the island of Gorgona at a depth of over 50 meters. I was surprised to meet so many sea urchins, known as Stylocidaris affinis, ...

Fanino Cirivasi

April 7, 2021

104

0

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 ...

Andrea Cirivasi

September 22, 2020

437

0