The recent appearance of hundreds of 'stunningly beautiful' blue sea creatures, known as Velella velella or by-the-wind sailors, along the Welsh coastline has sparked curiosity and fascination. These free-floating hydrozoans, with their unique sail-like structures, have captured the attention of beachgoers and nature enthusiasts alike.
The Beauty of By-the-Wind Sailors
One of the most striking aspects of these creatures is their appearance. Described as "like a crystal" by those who have encountered them, their vibrant blue color and delicate form make for a captivating sight. Marine specialist Frankie Hobro, from Anglesey Sea Zoo, emphasizes their beauty, but also warns of their potential sting.
A Natural Phenomenon
The nickname "by-the-wind sailors" is derived from their small sails, which allow them to navigate the ocean's surface at the mercy of the wind. These creatures are often mistaken for their more notorious relative, the Portuguese man o' war, but Hobro clarifies that they are much smaller and generally harmless. She explains the phenomenon of "blue tides" caused by these sailors, which can create a breathtaking display when the sunlight catches their sails.
Seasonal Visitors
By-the-wind sailors are relatively common, especially during the autumn and winter months. Ocean currents play a crucial role in their distribution, carrying them long distances. These creatures, measuring about 7cm in length, are unable to move independently and are often stranded ashore after storms or changes in currents. Interestingly, large groups tend to strand together, as they share the same currents and are deposited along coastlines simultaneously.
A Colony of Animals
Similar to their cousins, the Portuguese man o' war, by-the-wind sailors are colonies of animals related to sea anemones and corals. They possess stinging cells, which, although considered mild compared to the man o' war, can still cause discomfort if touched. Hobro advises caution, especially when it comes to sensitive areas of the body, as the sting can result in a tingling sensation. Even when washed ashore and seemingly dead, these creatures' stinging cells remain active, so it's best to admire them from a safe distance.
Deeper Insights
The appearance of these beautiful creatures raises questions about the ocean's mysteries and the delicate balance of marine life. It highlights the importance of understanding and respecting the natural world, even in its most seemingly harmless forms. As we continue to explore and appreciate the wonders of nature, it's crucial to maintain a sense of curiosity and respect for the creatures that share our planet.
Conclusion
The arrival of by-the-wind sailors along the Welsh beaches serves as a reminder of the beauty and complexity of our oceans. It encourages us to delve deeper into the mysteries of marine life and fosters a sense of wonder and appreciation for the natural world.
