close-up of a rare and colorful nudibranch off balicasag island, bohol, philippines

asia beach bio biodiversity bohol bottom burgos coral country deep dive divers diversity diving effortlessly efforts fish fishes fishlife healthy holiday invertebrates island leyte life macro marine mollusk nudibranch ocean padi padre panglao paradise pelagic pelagics philippines polyp polyps predators preservation prey pristine rare reef region resort school scuba sea small snail spots swarm travel tropical tropics underwater vacation water wildlife