scubaseason
Critically Endangered· population decreasing· assessed 2019

Scalloped Hammerhead Shark

Sphyrna lewini

Sighting evidence at Al Wajh Bank, Jeddah Reefs

Scalloped Hammerhead Shark

Photo: Kris Mikael Krister · CC BY

Schools appear along the deeper outer wall during cooler months, descending below the thermocline during the day and rising into shallower water at dawn and dusk.

Evidence at this site

No confirmed records on file at this site

Scalloped Hammerhead Shark is listed as a curated species here based on historical reports.

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