The death of The Little Mermaid, when she turns to water, based on H. C. Andersen's famous fairy tale with the same name.
This sad, beautiful story is about a mermaid willing to sacrifice her own life for a man she never could have, and by saving him also saves her own soul.
And yes, I do find the original story to be much better than Disney's version which completely ignores the morale and beauty of the story. That said, I did love Ariel growing up.
Drawn by hand with pen, scanned, and coloured in Corel Photopaint X3.