I was looking at a bilingual book from Chronicle Books of The Little Mermaid and discovered the work of Spanish illustrator, cartoonist Max (Francesc Capdevila Gisbert.)
I'm attracted to his straightforward, bold line and muted color palette. The Sea Witch in Hans Christian Anderson's story is a wonderful character to illustrate. There is enough leeway in the story's description of the witch to allow an illustrator to come up with something unique. Max does a nice job of giving her a bit of a kindly appearance that might work to lure an innocent mermaid into having false hopes.
If you are only familiar with Disney's Little Mermaid, read Hans Christian Anderson's original story and compare it to the Disney adaption. You will notice some major differences.