Titan Triggerfish Nesting Behaviour: Digging Nest Crater In Sandy Seabed - 4K 影片檔

A titan triggerfish (Balistoides viridescens) digs into a sandy lagoon floor, fanning sediment into a cloud as it excavates a crater shaped nest for its eggs: during nesting season, females guard a cone-shaped territory above the nest and will chase off anything that enters it, from reef fish to passing divers, making them one of the more territorial species on the reef. The nest can span more than a metre across once fully excavated in the sand. 4K, vertical wide shot, scuba diver POV. Ko Haa Archipelago, Andaman Sea, Krabi Province, Thailand.