Coral shrimpfish

Raja Empat, Papua, Indonesia

Fuji F2 105 mm, 1/90 @ f/27

Coral shrimpfish swim with their heads facing downwards, but mostly move from side to side. When a possible predator (or a photographer) approahces, they instantly turn edge-on, becoming almost invisible, and slip slide away. A bit maddening, but fun, to try to photograph.