Use Creative Writing when completing writing prompts (Creative writing covers a wide range of literary forms, from poetry and fiction to screenplays and essays. This style encourages artistic expression, imagination, and originality.) 
Writing Prompt: A male sailor meets a mermaid, they meet each other often and eventually fall in love but they live in different worlds. The male sailor decides to seek the help of a sea witch and she agrees to brew a potion that would turn him into a mermaid if he finds a treasure for her. He brings back the treasure after a difficult quest and drink the potion transforming him into a female mermaid. He is surprised by his gender changing but still decide to go see his love.