Scalloped hammerhead migrations
Famous for schooling around eastern Pacific seamounts and warm-water ridges — the recorded sightings trace where divers actually meet the schools.
See scalloped hammerhead dive sites · zoom in and select a glow to open that coast on the dive map
The scalloped hammerhead year, in real records
Famous for schooling around eastern Pacific seamounts and warm-water ridges — the recorded sightings trace where divers actually meet the schools. The map above animates 2,615 recorded observations of Sphyrna lewini — CC0 and CC BY 4.0 records accessed through GBIF, binned by calendar month, peaking in December. Sightings are history, not a forecast: they show where people have actually seen this animal, which is strong planning context and never a guarantee.
Where the year peaks
The regions holding the most recorded scalloped hammerhead sightings, and the months when each one runs hottest — computed from the same dataset the map animates.
- Galápagos & eastern PacificNov–Dec492 sightingsdive sites here
- US & Canada — Atlantic coastAugust353 sightingsdive sites here
- Baja & Pacific MexicoFebruary312 sightingsdive sites here
- Eastern AustraliaOct–Feb148 sightingsdive sites here
- East Africa & Mozambique ChannelAug–Apr129 sightingsdive sites here
- Micronesia & western PacificMarch90 sightingsdive sites here