I like the shapes. I draw lots of fantasy maps for d&d and other stuff and often I turn into the nature to find inspiration. Random shapes in nature is my biggest source to draw the maps. I like the one shaped like a horse ( you said it looks like a lobster but its a horse for my eyes ) those pictures are great source for drawing the maps.
I looked again and can see the horse now, and cool you use nature to inspire you for your art creations