I was looking at the Grindylow Tangling Tentacles (Ex) ability and i was wondering is it even possible to be tripped while swimming and what happens if you trip a swimming PC.
From the Wormwood Mutiny GM thread:
Oh also while reading through it all it says in The Cauldron (area D8) that characters tripped must start making swim checks, according to the low tide marker on the map there's still a good 40-50ish feet of water. So 2 parts A) wouldn't they already be swimming? and B) can you be tripped if you're in/under water?The PCs are likely already swimming. A trip attack represents being pulled below the surface, thus requiring another Swim check to recover.
This thread got me excited for all the wrong reasons.
I didn't bother if the PC's were swimming, it kind of makes no sense at all...if they are walking on the bottom however, thats a different story...
I seem to remember reading somewhere that a swimming PC who was tripped was pulled under water...
If I had to rule on it, I would say it would be an automatic pull downward of maybe 5 feet.
The closest I can find in the AP is from the Cauldron encounter:
Characters tripped within the Cauldron must make a DC 10 Swim check or begin sinking to the bottom of the chamber at a rate of 15 feet per round.