Surge in Jellyfish Sightings Along UK and Irish Coasts
A recent report by the Marine Conservation Society highlights a surprising trend along British shores – a 32% increase in jellyfish sightings compared to the previous year. The most frequently observed were the large barrel jellyfish, often referred to as the "dustbin-lid" jellyfish, which accounted for 27% of all sightings, marking a 21% increase from the previous year.
While jellyfish populations naturally fluctuate over time, experts suggest that the rise in sightings may be linked to climate change. However, there currently isn’t enough evidence to support this theory. Dr. Peter Richardson, Head of Ocean Recovery at the Marine Conservation Society, noted, "Jellyfish populations are highly variable year on year and depend on several environmental factors that are different each year, such as sea temperatures and storms."
The report shows that 75% of sightings consisted of individual jellyfish, while a notable 11% reported large groups of over 100 creatures, reflecting a 57% increase from the previous year. Among other species spotted were lion's mane, moon, compass, blue, and the Portuguese Man O' War jellyfish.
In addition to jellyfish, the Marine Conservation Society also tracks marine turtles, which feed on these gelatinous organisms. The report reveals 12 marine turtle sightings this year, including four leatherbacks and seven loggerheads.
Justine Millard, Head of Volunteering and Citizen Science at the Marine Conservation Society, stressed the importance of reporting such observations, stating, "The data on jellyfish and turtles that volunteers submit plays a vital role in understanding the changes occurring in our marine ecosystems, and help us to protect our seas."
As these unique aquatic trends continue, scientists hope to gain more insights into the impact of climate change on these marine creatures.
