Some ideas I have:
Naut[]
A Naut
Idle Animation
They appear on the Iron Whale and can be destroyed in one blow. Nauts can' t be hit from above, acting like a water Icedrake. They canbe used as a support to reach the heights.
Attacks[]
Running out of water
Shooting
When on water it can idle or move following a pattern, being able to collide with the player. When out of water it will stop moving and act like Gobcano.