D&D Random Encounters for 5E - Underwater

Encounters might be a meeting with a patrol of guards at an old shrine or a familiar looking for aid. It might be an ambush in the wilderness, a stand-off in the city or a monster in the Underdark.
Encounters underwater bring visions of murky seas, vast reefs and dark depths. They might occur in a kelp bed, an underwater cave or by a long-forgotten shipwreck

tools for - dnd5e encounters underwater

level: party size: terrain: sources: type:

combat

1 Merrow

At a sparkling shrine to a forgotten power and a garden of white soft coral (there are several clams)
They are making underwater art
In a fight they used ranged attacks on the largest foe
Difficulty... 450 Deadly

combat

1 Sea Hag

At a stone arch (it is sacred to a power of darkness)
They are gathering pretty stones
In a fight they focus on foes with ranged weapons
Difficulty... 450 Deadly

combat

1 Killer Whale

At a hidden underwater tunnel entrance surrounded by shells (nearby is a shipwreck)
They are hiding from a nearby light source
In a fight they attack whoever is nearest
Possibly... during the fight someone takes the fight to a new area (teleport / through a door / retreat)
Difficulty... 700 Deadly

combat

2 Giant Octopi

At a half of wrecked ship by an area of magical darkness (someone has left a seaweed-covered a sealed clay pot)
They are telepathic
In a fight they attack whoever is largest
Possibly... they have 2d4 waterproof ceramic and glass lanterns capable of working underwater (50 gp each)
Difficulty... 600.0 Deadly

combat

1 Sea Hag

At a pair of underwater cave entrances (there is a stone statue of a sea deity)
They are exploring a wreck
In a fight they run away if things start going badly
Possibly... they have an intricate set of dragonchess with ivory pieces using creatures of the sea
Difficulty... 450 Deadly