Large jellyfish off Arcachon: Why more of these marine animals are appearing on beaches now

Anyone heading into the water on the beaches of the Bassin d'Arcachon or on the Atlantic coast of the Gironde often first looks carefully out to sea. In recent days reports of unusually large jellyfish close to shore have increased. Some holidaymakers therefore decide not to swim, while others prefer to observe the fascinating animals from the beach. The sight is impressive, but in most cases it is a perfectly normal natural phenomenon. During the summer months jellyfish regularly reach the coast from the open Atlantic. This is caused by ...