I just saw that recently, a bunch of blue dragons were found on the beaches of Colima. I didn't even know these things existed, but apparently it's a tiny mollusk that floats in the ocean and looks beautiful but is super poisonous. The scientific name is Glaucus atlanticus, according to what I read, and what makes it dangerous is that it feeds on venomous jellyfish and accumulates all those toxins in its body.

The crazy part is that even though it looks harmless or even dead on the sand, it still remains toxic. If you touch it carelessly, your skin burns, it hurts quite a bit, and it can cause dizziness and nausea. Authorities asked people not to handle it and to report if they see any. They say the warm currents of the Pacific are bringing them toward the coast.

To stay safe at the beach now, you need to carefully check the sand before sitting down, avoid touching anything strange you find in the water, and alert the lifeguards if you see something unusual. If someone accidentally touches it, just rinse with seawater and go to the doctor immediately. This could become more common due to ocean warming, so it's best to stay alert.