Grey reef shark
Carcharhinus amblyrhynchos
Sighting evidence at Avana Passage Rarotonga, Rarotonga, Cook Islands
Photo: Luis P. B. · CC BY-NC
Grey reef sharks are one of the defining species of Indo-Pacific reef passages, using the current flow through channels to increase their hunting efficiency. They are highly territorial and communicate threat postures when approached too closely, arching their back and lowering their pectoral fins. Avana Passage reliably holds a residential group that patrols the same section of channel on every tide cycle.
Evidence at this site
No confirmed records on file at this site
Grey reef shark is listed as a curated species here based on historical reports.