Bigeye Jack
Caranx sexfasciatus
Sighting evidence at Late Island Wall, Vava'u, Tonga
Photo: Mark Rosenstein · CC BY-NC
Bigeye jacks form baitballs of hundreds to thousands of individuals at the Late Island wall during morning current peaks, creating a living vortex just below the surface that attracts tuna, barracuda, and periodically silvertip sharks. The school behaviour is a coordinated predator-confusion strategy, and divers positioned at the wall's upper lip can experience the baitball rotating around them at close range.
Evidence at this site
No confirmed records on file at this site
Bigeye Jack is listed as a curated species here based on historical reports.