Recent reports of increased whale sightings and strandings in the North and Baltic Seas have sparked concern among experts. These marine mammals are being found far from their typical deep-sea habitats, prompting investigations into the causes of their unusual presence.
North Sea Strandings
In early May 2025, a deceased humpback whale was discovered on the beach at St. Peter-Ording. This followed earlier reports of two other dead whales found on Sylt and Wangerooge in the North Sea. These discoveries add to the growing number of whale strandings in the region.
Baltic Sea Sightings
Firefighters recently encountered a live humpback whale just 800 meters off the coast of Ahrenshoop. This sighting, along with others near Travemünde and Hiddensee, suggests that multiple whales may be present in the Baltic Sea. Environmentalists note distinct characteristics in recorded footage, supporting the possibility of several individual whales.
Possible Causes
Experts suggest that young, inexperienced whales may be straying off course while searching for food, or simply exploring unfamiliar territories. Increasing underwater noise pollution, from industrial activities like oil and gas extraction and shipping traffic, is also considered a significant factor in their disorientation. Disrupted magnetic fields and climate change affecting prey distribution are other potential causes.
The influx of whales into the North Sea increases their risk of stranding due to the changing tides. The situation highlights the need for further research to understand the behavior and migration patterns of these marine mammals.