OnTheWingsOfADragon, apologizes to keep you waiting, but it appears that nighty- is inactive at the moment, so I will handle this instead!
Narwhal's design looks good! But I would ask if you could possibly add some seaweed to Narwhal's back, and that's all.
Additionally, stingrays do not count as dorsal fins so no need for that trait.
For confirmation, you are using your uncommon myo and rare trait