Bumphead Parrotfish

Bumphead parrotfish are the giants of the parrotfish family — schools of 30–50 patrolling outer-reef walls at dawn, headbutting coral to crack chunks off, then crunching them with fused beak-teeth. A single school can consume tonnes of coral per year and produce most of the white sand on adjacent beaches.

Sipadan and the Philippines (Tubbataha) are the global hotspots — sunrise dives at Barracuda Point or Coral Garden routinely deliver bumphead schools at 15–25 metres. Andaman's outer reefs hold smaller schools.

They're heavily targeted by spearfishing — IUCN Vulnerable — and recovering only in well-managed marine parks. Diving them at protected sites directly funds conservation, and the early-morning headbutt-and-crunch soundtrack is unforgettable.