Accidently fell into the sea and got pulled under by some mysterious force. And now I'm being turned into a more... fitting and mighty form.
For the better I would say!

Feeling my hands grow into large wings, a large tail sprout from my back, my chest and thighs ripping apart my clothes, my head pushing into a snout with sturdy horns sprouting in the back, my shape soon growing fins and frills around...
What's not to love here? I will rule the seas now!

Art by  Ageaus