Scalloped Hammerhead
Sphyrna lewini
Sighting evidence at Carmen Island Wall, Loreto
Photo: Kris Mikael Krister · CC BY
Scalloped hammerheads congregate along Carmen Island's wall in schools of 20 to 100+ individuals between July and November, circling in the blue water at 20 to 35 m in a behaviour linked to navigation and social bonding rather than feeding. The schools are most dense during early morning dives before boat traffic increases, and patient divers who remain still against the wall are rewarded with passes as close as 5 m. Carmen Island is considered one of the most reliable hammerhead schooling sites in the Gulf of California's central section.
Evidence at this site
No confirmed records on file at this site
Scalloped Hammerhead is listed as a curated species here based on historical reports.