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Attribution Non-Commercial

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Production CNRS Images

Original Idea

Christian Sardet

Director

Noé Sardet

Scientific consultant

Claude Carré

Texts

Christian Sardet, Sasha Bollet, Véronique Kleiner

Images

Noé Sardet, Christian Sardet

Editing

Nicolas Mifsud

Sound mix

Thomas Huguet

Narration

François Briault

Director of production

Véronique Kleiner

Production assistant

Céline Ferlita

Translation

Theodore Rosengarten

Embryos and larvae

time 01:33

Drifting in the currents, embryos and larvae perpetuate the species and are food for multitudes.

Photo Gallery

Narration

Larvae that hatched from their eggs a few weeks ago look like little monsters. The larvae from animals such as crabs, clamssea urchins or sea anemones go through metamorphosis, a radical transformation during which they acquire the characteristics and behavior of their species.

If they survive, that is. These embryos and larvae are easy prey for jellyfish, shrimps or fish.  They provide an abundant source of food, since many species lay millions of eggs in the open sea.  

When fertilized, the eggs become embryos and then larvae. After a few weeks of drifting, only a few of the young survive to adulthood. That will be enough to perpetuate the species.

In this episode

Cnidarians

Pelagia / Pelagia noctiluca
Anthozoan larva
Velella larva / Velella velella
Clytia / Clytia hemispherica
Siphonophore

Echinoderm

Sea urchin larvae / Paracentrotus lividus

Crustaceans

Phronima

Mollusks

Gymnosome / Pneumodermopsis paucidens
Veliger larva

Plankton

Fish larvae
Annelid larva

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