Fakarava, hundreds of grey sharks hunting at night over the reef

frenzy night shark grey shark predation hunt hunting nervous nervosity Carcharhinus amblyrhynchos school group hundred reef coral prey pass tuamotu south pacific ocean swarm polynesia oversea requin gris frénésie essaim groupe meute centaine chasse chasser prédateur proie poisson corail récif passe outremer pacifique sud polynésie gopro tetamanu Fakarava