Peltodoris mullineri, commonly known as Mulliners dorid: snails and slugs, translates as stomach foot, univalve, has a mantle with a significant cavity used for breathing and excretion, most mollusks have a radula, has a nervous system, multicellular organism, eukaryote (nucleus and organelles in membrane), body plan becomes fixed eventually, excluding metamorphosis, motile (most species), must ingest another organisms or their product to live