Glaucus Atlanticus

Glaucus atlanticus is a species of small-sized blue sea slug. It’s known by several other names, including the blue angel and blue dragon. Glaucus atlanticus is found throughout the world’s oceans, in temperate and tropical waters. It floats upside down on the surface tension of the water. Due to its unique means of feeding, it cannot be bred or kept in captivity without dooming it to a quick and certain death.