scubaseason
Critically Endangered· population decreasing· assessed 2019

Scalloped Hammerhead Shark

Sphyrna lewini

Sighting evidence at Shark Reef, Ras Mohammed, Sharm el Sheikh

Scalloped Hammerhead Shark

Photo: Kris Mikael Krister · CC BY

Schools of up to several hundred hammerheads gather around Ras Mohammed in autumn, patrolling the thermocline and using the strong currents at the reef corner for navigation.

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