Glaucus atlanticus is a mollusk about the size of a quarter which hangs upside down from the surface of the water and drifts throughout the tropical oceans, maintaining buoyancy by swallowing air bubbles. (Photo by Jesús Pineda, Woods Hole Oceanographic Institution) #Shellfish
Leafy SeaDragon, or Glauert's seadragon, (Phycodurus eques) found along the western coast of Australia.
Neptune's Mask: Depending on interpretation, this view of the ctenophore Ocyropsis maculata looks like either an ancient Greek helmet or a clamshell bucket for earth-moving machines. This large (to 6”) predator uses its broad lobes to catch small crustaceans, rolling them up like a baseball glove catching a ball. It also uses them to swim rapidly away from trouble. #Ctenophore