Sylt: Subtropical jellyfish discovered in Germany for the first time

Subtropical by-the-wind jellyfish (Velella velella) have been washed up on the beaches of Sylt, marking the first recorded sighting of this species in Germany. The jellyfish use a small, triangular sail to drift across the water's surface, propelled by the wind.

Marine biologist Rainer Borcherding from the Schutzstation Wattenmeer attributes this occurrence to rising ocean temperatures. While these specific jellyfish are harmless to humans, experts warn that their presence may signal the potential arrival of more dangerous species in the North Sea, such as the Portuguese man o' war or the Mediterranean mauve stinger, which can cause painful stings.

The swarm was previously spotted off the coast of Scotland in mid-July and near Denmark in early August. These organisms feed on plankton crustaceans and fish larvae using tentacles located beneath their blue bodies.