So since the start of defiance we have added sea-creatures removed from the spawn table, no sharks, dolphins or octopi has spawned since day 1.
This in itself is not a problem for day to day gameplay. But when we keep having missions to kill said creatures you can get stuck on a move (valrei map) for several days if unlucky.
If you get these missions a few times during a scenario it can cause your kingdom to lose and as a player, there is nothing we can do about it.
I see 2 ways to fix this problem
Add put sea creatures back on the spawn table
Take a look at the valrei missions table and remove the missions to slay creatures that do not exist