The Bolinas Beach in Marin County was covered with a massive swarm of Velella. The jellyfish-like species are common in ...

Thousands of Cape box jellyfish form several columns that are linked deeper down by a thick swarm. Box jellyfish are known to gather in large numbers to mate, performing elaborate courtships. However, ...

The phenomenon is attributed to El Niño currents Beaches near the city of Osorno in southern Chile have closed due to swarms of jellyfish populating the shores. At least 40 people have reported ...

Moon jellyfish swarm in the cool autumnal waters of a fjord outside Tromsø in northern Norway illuminated by the aurora borealis. Sheltering his equipment in a self-made waterproof housing, Audun used ...