Sealife guideThe Callyspongiidae familyThe taxonomy of marine species
Explore the taxonomy of sponges including demosponges, calcisponges and glass sponges !
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A tough startThe 2026 Route du Rhum gets off to an intense start, with major technical failures, Francis Joyon's capsize, impressive speeds and strategic route choices near the Azores. A look back at the first 48 hours of racing.Read more
A smooth start, an uncertain AtlanticDiscover the 2026 Route du Rhum start off Saint-Malo, where favorable initial conditions contrast with an uncertain Atlantic crossing shaped by changing winds and weather.Read more
Five questions to understand the startDiscover how the 2026 Route du Rhum start unfolds, including harbor preparations, lock passages, skipper schedules, weather routing rules, and the Virtual Regatta race.Read more
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Raie lisse
(Raja brachyura)
(Raja brachyura)
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