These cuties are based on sea lemon dorids, a lumpy yellow nudibranch that lives up to its name. They live in intertidal areas, and at low tide they stay sessile and shrunken to try and retain water. When the tide rises they become active and unfurl their flower-like gills, which I likened to a crown with this line. Of course on real sea lemons, the gills surround their anus, so you may want to rethink giving your Doroyale any skritches on top of its head.
by stressedoutoddish