Scuba Season

Whitetip reef shark

Triaenodon obesus

Sighting evidence at St John's Reef, Brothers Islands

Whitetip reef shark

Photo: Hugo Brisset · CC BY-NC

A slender, nocturnal predator instantly identified by the white tips on its dorsal and caudal fins. During the day, whitetips rest motionless in groups on sandy ledges or inside reef caves — divers frequently swim directly over resting aggregations. At night they become highly active hunters, pursuing fish and octopus through reef crevices with remarkable agility. Unlike many sharks, they are non-territorial toward divers and typically ignore human presence. Listed as vulnerable; their slow reproductive rate makes populations sensitive to fishing pressure.

Evidence at this site

0 records within 25 km

Confidence: low

No date on file

Seasonality

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How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Also seen at other sites