Onderwater school van vis gele Big eye snapper (Lutjanus lutjanus) op koraalrif - Stockfoto

Coral reefs are the one of earths most complex ecosystems, containing over 800 species of corals and one million animal and plant species. Here we see a massive shoal of Bigeye Snapper (Lutjanus lutjanus). The large school of fish group together as a means of protection from predators. This is a typical animal behaviour that ensures the species survival. The location is Phi Phi Archipelago, Andaman Sea, Krabi, Thailand.