Scuba Season
Vulnerable· population decreasing· assessed 2020

Blacktip Reef Shark

Carcharhinus melanopterus

Sighting evidence at North Reef, Pigeon Island

Blacktip Reef Shark

Photo: azure27014 · CC BY-NC

A resident population of blacktip reef sharks uses North Reef as a resting and foraging ground year-round, with numbers peaking to 15 or more individuals in the calm-season months of May through September. They occupy the shallow coral flat at 3 to 8 metres, frequently circling divers at close range. Their presence indicates a healthy trophic cascade, with abundant reef fish prey sustaining this apex predator community.

Evidence at this site

11 records within 25 km

Confidence: medium

Seasonality

Jan
Feb
Mar
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May
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Dec
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