Scuba Season
Critically Endangered· population decreasing· assessed 2019

Scalloped hammerhead shark

Sphyrna lewini

Sighting evidence at St John's Reef, Brothers Islands

Scalloped hammerhead shark

Photo: museldiver · CC BY-NC

Evidence at this site

0 records within 25 km

Confidence: low

No date on file

45 records within 50 km

Confidence: medium

Seasonality

Jan
Feb
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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