Tahiti, group of grey sharks over the coral reef, 4K UHD

Carcharhinus amblyrhynchos shark grey shark group schooling sharks shark swarm swimming hunt reef ocean Tahiti coral reef undersea life tropical open water gathering coral reef sea south pacific French Polynesia scuba diving day deep requin requin gris groupe nager chasser banc de requins passe profond plongée sous marine Polynésie française 4K UHD 4K video video sous marine vie sous marine