The Blue Glaucus scientific name is glaucus atlanticus, that's also the species name. There are other names for the blue glaucus including the blue dragon, sea swallow and blue angels. They are known for eating venomous prey and stealing their toxins.
Interestingly the blue glaucus eats some types of jellyfish including Portuguese man o' war, the blue button, hydrozoans and other venomous siphonophores. They also eat large, venomous prey. Astonishingly it stores it's prey's stinging cells in their bodies to use later against predators.
Generally they live in the oceans of Atlantic, Pacific, and Indian, in temperate and tropical oceans. The temperatures of the places are 84*F in Atlantic, 38.6*F for the Pacific and 66* F and 82*F for the Indian ocean.
Interestingly the blue glaucus can swallow air and hold it in their stomachs in order to float on the surface. The way it moves by either swimming or propelling it's body. Surprise surprise they tend to be aggressive.
Surprisingly the blue glaucus is considered a slug and they are a shell less gastropod. They can grow to 2 inches and they float upside down by using the surface tension to stay up, where they are carried by the wind and current.