Scotland's waters typically see a higher prevalence of jellyfish during July and August, a phenomenon influenced by a combination of environmental factors including sea temperatures and the availability of plankton, according to marine experts.
Anna Bunney of the Marine Conservation Society, an organization that conducts nationwide jellyfish surveys, noted that jellyfish numbers and distribution are impacted by several variables. "This includes sea temperatures, the availability of plankton for feeding, which peaks during the summer months when it is warmer, and ocean currents," she stated.
Sea temperatures generally follow air temperatures with a slight delay. While air temperatures in Scotland usually reach their peak in July and August, sea temperatures tend to be warmest in August and September. This warming trend in the sea signals the return of jellyfish populations.
People often express fear of jellyfish due to the potential for painful stings and their unpredictable movements in the water. The larger species, such as the Lion's Mane jellyfish, can grow to be quite substantial and are known for their potent sting.
Various types of jellyfish inhabit Scottish waters, including the Barrel jellyfish, the Lion's Mane jellyfish, and the Moon jellyfish. The Marine Conservation Society's survey aims to better understand the fluctuations in these populations.
The organization collects sightings data from the public, contributing to a broader understanding of marine ecosystems. This data helps in tracking the distribution and abundance of jellyfish species throughout the year.