Organism | : | Echinoderm Sea urchin |
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Species | : | Paracentrotus lividus |
Description | : | Male and female sea urchins release huge quantities of gametes. The eggs are fertilized in open water where the embryos divide to form 2, 4, 8 cells in a few hours. They then develop into a ball of cells called a blastula. Photo : C. Sardet |
Project | : | The Plankton Chronicles |
Website | : | http://www.planktonchronicles.org |
Tags | : | Embryo Blastula |