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 ...

Andrea Cirivasi

November 6, 2021

261

0

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

83

0

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. ...

Fanino Cirivasi

March 7, 2021

104

0

9

01:00

Purple Sea Urchin - Sphaerechinus granularis

Sphaerechinus granularis is a species of sea urchin in the family Toxopneustidae, commonly known as the purple sea urchin ...

Andrea Cirivasi

May 5, 2019

158

77

02:52

Sea Urchins in reproduction

In this film, realized in the first days of June, we were able to document the moment of reproduction of the Sphaerechinus Granularis urchin ...

Fanino Cirivasi

June 6, 2018

2.40K

0