Amazing slug redesign as a water horsie, so wonderful! But you could upload pic from different angle. Maybe it's just me, but first I thought that this blue thing in the down left corner is a tail of hippocampus. And I didn't like this tail. Fortunatelly, I checked etsy link and saw that beautiful "tail fin".
*nodnod* Way back when they were first cutting people up to figure out how they worked, anatomists though that lil' bit of the brain looked kinda like a seahorse. Seashorses are from the hippocampus family so named because they kinda resemble the mythological hippocampus. ^^