Sealife guideThe sea life glossaryOur glossaries
Last updated on 04/15/2026 at 10:19 PM
English
Description
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cetaceans
Définition
Marine mammals including whales, dolphins and porpoises.
Anglais
cétacés
Français
choanocyte
Définition
A flagellated cell in sponges that creates water currents and captures food particles.
Anglais
choanocyte
Français
cnidocyte
Définition
A specialized stinging cell found in cnidarians, used for defense and capturing prey.
Anglais
cnidocyte
Français
copepod
Définition
A small, planktonic crustacean that is a key component of aquatic food chains.
Anglais
copépode
Français
coralligenous
Définition
A habitat formed by calcium carbonate deposits from coralline algae, providing structure for marine organisms.
Anglais
coralligène
Français
ctenidium
Définition
A comb-like gill in mollusks used for respiration and sometimes for filtering food.
Anglais
cténidie
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Thursday, April 23rd 2026
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Discover where to see groupers in the Mediterranean: the best diving spots and protected marine areas to observe this iconic fish in its natural habitat.

Monday, April 20th 2026
The broadnose sevengill shark
Discover the broadnose sevengill shark (Notorynchus cepedianus), a large primitive coastal shark with seven gill slits living in temperate and subtropical waters around the world.

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The blueface angelfish
The blueface angelfish is a very colorful fish of the tropical coral reefs of the Indo-Pacific, recognizable by its bright blue head and its bluish body finely reticulated with yellow.
Photo of the Day

Requin pointe blanche océanique ou requin longimanus
(Carcharhinus longimanus)
(Carcharhinus longimanus)
