Seal form of Sealnado and Krampus

So, first, here is a picture (from Combined Status mod):

As you can see my naughtiness is at the level 50/43, because I just killed Seal form of Sealnado, when it was on water. And... no Krampus spawned. That is weird, because Krampus is nowhere to be found. I guess if I kill something now on land he will spawn, but just killing the Seal doesn't spawn him, when on water