Leviathan

This world was once a thriving world where the only sentient beings were sea monsters ruled by their king 'the leviathan' until the humans came and ruined the world and mercilessly killed any sea monster they saw, so they hid among humans to continue their species, the leviathan has died a long time ago...... but that doesn't mean another can be born. (This was mainly for my own entertainment and I'm publishing it so that everyone can enjoy it if they want, BTW you have to make your character IDK how to make the questions at the beginning sooooooo)