Anyone have any experience/suggestions for running a Sea Cave/Cavern dungeon? I’ve already got a lot of the details worked out for this place, but I feel like it’s missing some things.
First off, the entrance to this cave system is located beneath a temple that was erected within the last decade by a visiting religious order in search of a place to put down roots in this area. Going for a Lovecraft inspired approach with the coastal town the PCs are currently occupying, I’ve placed an unnatural horror at the bottom of this cave system in the form of this gargantuan oyster creature that’s been infected by an evil parasite that’s corrupted it. The combination of this parasite/oyster has resulted in a sort of psychic/magical infection on the inhabitants of this temple and it’s turned them all into these nightmarish fish men that have turned from their goddess and now worship the oyster.The corrupted oyster has been sending fish men to the town to abduct townsfolk, some of which are intended to be food, others to bolster their numbers. In addition to amassing an army of fish men, the oyster creature naturally has the ability to locally control the seas and as a result has set up this sort of Ravenloft-esque fog that’s encased the entire bay area near the town which has resulted in a complete stop of the fishing and import/export that the town was once known for as ships either don’t make it in to begin with or get turned around and sent back to the harbor.
So yeah, got a place, got a motivation for the PCs to go here, got a boss, got some inhabitants (could probably use more), but I’m wondering if anyone has any suggestions for anything that’ll help this small-ish dungeon pop. Maybe some custom sanity moves, maybe some traps, maybe some interesting encounter ideas, maybe a way to make fighting a giant oyster interesting.