泰国安达曼海清澈海水中的热带礁鱼大眼鲷鱼群

snapper (Lutjanus lutjanus) demonstrate reef ecosystem schooling behaviour above a mixed coral reef in the Andaman Sea, their mass formation a strong indicator of marine biodiversity and food chain stability on a healthy Indo-Pacific reef. Schooling in snapper serves as both predator defence and coordinated foraging strategy, with large groups able to overwhelm prey that solitary fish could not catch. The clear shallow water and ambient light give strong colour and visibility to the school against the reef below. 4K, vertical frame, medium shot, scuba diver POV. Andaman Sea, Krabi Province, Thailand.