Also known as sea swallow, blue sea slug, blue angel or blue dragon, it is a small sized sea slug that lives in the Atlantic, Indian and Pacific ocean.
They feed mainly on other sea creatures like the Portuguese Man-o-War, a cnidarian often mistaken for a jellyfish. The Glaucus is immune to their venom, and can actually store it in its cerata ( their dorsal and lateral outgrowths on the upper surfaces of the body). As a result they can sting potential predators. The sting is quite painful for humans, so they should be handled carefully. At times, and given the occasion, they can be cannibalistic.
With the aid of a gas-filled sac in its stomach, the Glaucus floats at the surface. Due to the location of the gas sac, the sea swallow floats upside down.
Like almost all heterobranchs, Glaucus is a hermaphrodite, having both male and female reproductive organs. After mating, both animals produce egg strings.
If ever you’re confused as to the name, just use the scientific one, Glaucus atlanticus. When in doubt, Latin.
Anyway, the Blue Dragon is a type of nudibranch, which means it’s a mollusk without a shell (easy for me to remember because, well… nudey-branch… no shell… I know it’s silly, but it’s easy to remember). It is venomous, too – which means if you’re a kid in Australia and a bunch of these wash up on shore one day, they’re… good fun to… throw at your friends?! That’s right. Kids in Australia throw these little beauties at their friends, they’re called “Bluebottle” fights. Don’t have a “Bluebottle” fight. These are animals, leave them alone.
What I really wanted to talk about with these was the finger-like projections… the whispies… They’re called cerata, and those are the organs where the Blue Dragon stores the stinging cells that it steals from the jellyfish that. it. eats.
Pretty cool, right? Yeah, yeah it is. But this precious little 4 cm slug doesn’t just eat any old jellyfish, this is a dragon we’re talking about. The Glaucus atlanticus eats the Man O’ War jellyfish – and just so you know, the Blue Dragon concentrates the venom that it collects and can produce a more deadly sting than the Man O’ War jellyfish. Can’t find a Man O’ War jellyfish, just a bunch of other Blue Dragons? That’s okay as well, sometimes they become cannibalistic.
A small mollusk called blue dragon, sea swallow, blue angel, blue glaucus, blue sea slug or blue ocean slug (Glaucus atlanticus). Blue dragons are a species of small, blue sea slug, a pelagic aeolid nudibranch, a shell-less gastropod mollusk in the family Glaucidae. Picking them up can result in a painful sting, with symptoms similar to those caused by the Portuguese man o’ war. Photo of hand showing nudibranch size is by vlastní obrázek.
New siren kid who’s based on the blue angel sea slug (one of my favorite animals like seriously idk how this wasn’t the first one i made). No eyes but she more than makes up for it with highly sensitive tendrils (namely the ones on her head, face and back), so she gets around just fine. She’s also Tahae’s closest friend.