When & where to dive with scalloped hammerheads
Schooling scalloped hammerheads are the defining big-animal dream dive. They gather where cool currents hit remote seamounts — and the season is everything.
Galápagos · Darwin & Wolf
Year-round“The cathedral — schools of a hundred-plus, biggest on the cool Humboldt current.”
Dive it at: Darwin & Wolf · Gordon Rocks
Cocos Island · Bajo Alcyone
Reliable“The legendary seamount — hammerhead heaven, a 36-hour crossing from Costa Rica.”
Dive it at: Bajo Alcyone · Dirty Rock · Manuelita
Socorro · Roca Partida
Reliable“The winter season on the Revillagigedo pinnacles, alongside giant mantas.”
Dive it at: Roca Partida · The Boiler · Cabo Pearce
Red Sea · Daedalus
Summer only“The summer schooling window on the offshore reefs — the accessible hammerhead trip.”
Dive it at: Brothers Islands · Elphinstone Reef · Daedalus Reef
Sea of Cortez · El Bajo & Las Animas
Occasional now“The seamounts that made hammerhead schooling famous. Numbers have collapsed since the 1990s, so sightings are now occasional.”
Dive it at: El Bajo Seamount · Los Islotes · Las Animas
Go deeper: Hammerhead Season Around the World: Where and When in 2026
Common questions
When is the best time to dive with scalloped hammerheads?
The strongest windows are: Galápagos (Year-round (largest numbers Jun–Nov)); Cocos Island (Jun–Nov); Socorro (Nov–May); Red Sea (Jun–Aug); Sea of Cortez (Jul–Oct).
Where is the best place to see scalloped hammerheads?
Galápagos is our top pick — The cathedral — schools of a hundred-plus, biggest on the cool Humboldt current. We also run trips to Cocos Island, Socorro, Red Sea, Sea of Cortez.
Are scalloped hammerheads sightings guaranteed?
No. We show honest season-by-season odds and a reliability rating per destination, and plan your trip for the peak window to maximise your chances — but wildlife is never guaranteed.
Other animals to plan around
