This thing looks like it must be an alien. Actually, it’s a nudibranch, which are often called “sea slugs” (a lot of unrelated things are called sea slugs). But as miraculous and strange as this thing is, it’s only about 3 centimeters long.
The blue dragon keeps an air bubble in its stomach in order to float. And while they’re just floating around, these critters nibble on the horribly venomous Portuguese man-of-war. That may sound unwise, but the blue dragon actually steals the man-of-wars’…
