Blacktip Reef Shark

Photo: Poseidon’s Adventure · CC BY-NC

Blacktip reef sharks patrol the sandy channels between coral heads in groups of 3 to 10, their distinctive dorsal-fin tips breaking the surface in the shallows at dawn and dusk. As the reef's primary mid-trophic predator, they regulate surgeonfish and parrotfish populations that would otherwise over-graze the corals. Bar Reef's healthy shark population is a strong biological indicator of overall reef condition — apex predator presence consistently tracks ecosystem integrity.