A massive analysis of nearly 19,000 whale strandings reveals that geomagnetic storms have no link to why they beach themselves.
April 29, 2026
Original Paper
Cetacean Stranding and Geomagnetic Disturbance Evidence from 18,951 U.S. Strandings (2015–2025)
SSRN · 6642463
The Takeaway
A popular scientific theory has long claimed that solar storms mess with the internal compasses of whales, leading them to get lost and strand on beaches. When researchers looked at ten years of data from the U.S. coast, they found absolutely no general association between the two. Previous studies that suggested a link were likely based on much smaller and less representative samples. This finding forces marine biologists to look elsewhere for the true cause of these tragic mass deaths. It overturns a widely accepted explanation and shows how big data can dismantle long-held assumptions. We are back to the drawing board on why whales lose their way.
From the abstract
Whether cetacean strandings are influenced by geomagnetic disturbances remains debated. Previous work focused exclusively on gray whales (n = 186, 1985–2018), reporting increased stranding probability during solar storms. Here we analyzed 18,951 confirmed cetacean strandings across 40+ species from the U.S. National Stranding Database (2015–2025), matched to daily geomagnetic Ap index data. For all strandings combined, no association with geomagnetic activity was found (p = 0.55). When restricte