A Brown Argonaut (Argonauta hians) riding a translucent jellyfish. The argonaut has a spiral "shell" (actually an egg case) that is it wearing, and its mantle is in the egg case, and its arms are reaching back into the "shell." The shell has a wavy series of edges. The parts of the arms that are exposed have their suckers sticking out. Its mantle is sticking out on the left side. The argonaut has round silvery eyes, its body is white with purple chromatophores, and a beige shell. The jellyfish is clear and has frilly edges. The background is dark.
"Onward, my noble steed!"
🐙📷Melissa Foo (www.inaturalist.ca/observations...)