This summer, thousands of bright electric blue creatures known as Velella velella, or by-the-wind sailors, have invaded UK shores, particularly at St Bees beach in Cumbria. These unusual organisms, typically found in warmer waters like those of Portugal and the Caribbean, have been spotted in such large numbers for the first time in over a decade, raising questions about the impact of climate change on marine life.
Velella velella are not jellyfish but colonial hydroids, consisting of tiny individual animals that work together. They use a sail to navigate the ocean’s currents, often washing ashore after storms. While they are harmless to humans, their presence serves as a warning sign of changing ocean conditions, which could lead to more dangerous species, such as the Portuguese man o’ war, appearing in UK waters.
Experts note that the influx of these creatures is linked to rising sea temperatures and shifting weather patterns, which could alter local ecosystems. As climate change continues to affect ocean currents, beachgoers may need to remain vigilant for more unusual marine life washing ashore.
The recent heatwave, with temperatures soaring to 35°C in some areas, has contributed to this phenomenon. The UK Health Security Agency has issued heat-health alerts, highlighting the broader implications of extreme weather on both human health and marine biodiversity.
Source: Metro
