Meet the blue glaucus—one of the ocean’s most dazzling little drifters! 💙✨ This tiny sea slug floats upside-down on the ocean’s surface, using its vibrant blue belly to blend into the water’s surface from above. But these free floaters are not defenseless! They have the ability to collect stinging nematocysts from their prey, which they adopt as their own defense. 😲 Learn more about these stunning sea slugs with our Marine Life Encyclopedia. Link in bio. #AnimalsAtoZ #MarineLife #OceanAnimals #BlueGlaucus #Nudibranch