<h4>Scientists blame climate change.</h4>
<p>Several beaches on Spain&#8217;s Mediterranean coast were temporarily closed to swimming due to an invasion of rare poisonous sea slugs, known as &#8220;blue angels&#8221; or &#8220;blue dragons&#8221; (Glaucus atlanticus). These small creatures, which usually inhabit tropical waters, rarely appear in the Mediterranean Sea, writes Science Alert.</p>
<p><a href="https://mandry.club/wp-content/uploads/2025/08/Glaucous-atlanticus2.webp"><img class="aligncenter size-medium wp-image-25819" src="https://mandry.club/wp-content/uploads/2025/08/Glaucous-atlanticus2-750x500.webp" alt="Blue dragon sea slug Glaucus atlanticus washed ashore" width="750" height="500" /></a></p>
<p>A few days ago, the coastal waters and beaches of Guardamar del Segura (<a href="https://mandry.club/krainy/spain/">Spain</a>) were overrun by small but very beautiful creatures with a silvery-gray back and a bright blue underside. They do not exceed three centimeters in size, but their harmless appearance is deceptive.</p>
<p>&#8220;Blue dragons&#8221; are carriers of potent venom. They feed on dangerous jellyfish, including the Portuguese man o&#8217;war, accumulating their stinging cells in their own finger-like appendages. Touching the slug can cause serious burns, severe pain, nausea, vomiting, and allergic reactions in humans.</p>
<p>The town&#8217;s mayor, José Luis Sáez, made the decision to raise red flags and prohibit swimming at all beaches. In his address to residents and tourists, he noted that the mollusks continue to appear &#8220;in greater numbers and more frequently each time.&#8221; The local police circulated a warning urging people not to touch the sea slugs.</p>
<p>Scientists note the unusual nature of this phenomenon, as &#8220;blue dragons&#8221; typically inhabit tropical waters. One of the possible reasons for their appearance off the coast of Spain is cited as climate change and the warming of seawater. These creatures are very sensitive to temperature changes.</p>
<!-- toc empty -->
The majority of hotels worldwide are geared toward family vacations: they offer entertainment for children,…
Is there salt in raindrops, why do the seas remain salty if so many freshwater…
Lake Van (Turkey) is the country’s largest and one of its most mysterious lakes, with…
Why is winter in Tromsø, Norway, located above the Arctic Circle, warmer than in Kyiv,…
Our compatriots choose them as husbands more often than other foreigners. Family life with Turkish…
"Mandry-Club" shares its secrets. Detailed guides, essential life hacks, and everything you need to know…
