In Ovid’s metamorphoses, Glaucus is a fisherman, who upon seeing his day’s catch eat some strange grass leap out of his net and back into the sea, decides to eats some of the strange herb himself. Immediately after tasting it he flings himself into the water.

Seeing his sudden love for the water, the titans Oceanus and Tethys transform him into a merman-like god of the water. 
---
Here the same thing happened to Dugun, but this was just a cursed Herb.

——
My Patreons voted for this back in March!
Photoshop
2017
~Age