| Organism | : | Echinoderm Sea urchin |
|---|---|---|
| Species | : | Paracentrotus lividus |
| Description | : | Sea urchins produce large amounts of gametes in their gonads that can weigh up to a fifth of the animal’s weight. Here a female sea urchin releases millions of eggs in the open sea. Photo : N Sardet, CNRS |
| Project | : | The Plankton Chronicles |
| Website | : | http://www.planktonchronicles.org |
| Tags | : | Egg |