Thresher sharks migrations
The long-tailed dawn hunters, counted here as a genus — from pelagic threshers at Malapascua’s cleaning stations to common threshers off California.
See thresher sharks dive sites · zoom in and select a glow to open that coast on the dive map
The thresher sharks year, in real records
The long-tailed dawn hunters, counted here as a genus — from pelagic threshers at Malapascua’s cleaning stations to common threshers off California. The map above animates 10,378 recorded observations of Alopias spp. — CC0 and CC BY 4.0 records accessed through GBIF, binned by calendar month, peaking in September. 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 thresher sharks sightings, and the months when each one runs hottest — computed from the same dataset the map animates.
- California & Pacific NorthwestJul–Dec9,371 sightingsdive sites here
- Norway, Iceland & North AtlanticOct–Jan408 sightingsdive sites here
- New ZealandJan–Apr216 sightingsdive sites here