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:

combatshark

3 Reef Sharks

At a ruined coral-carved chambers (which is associated with a powerful shapechanger)
They are consuming an unusual type of seaweed
In a fight they retreat when half their number have fallen
Possibly... during the fight someone slips over and possibly knocks others over too
Difficulty... 600 Deadly

combat

1 Swarm of Quippers

At a patch of shell-studded kelp (close by is a tomb)
They are marked by a deity of darkness
In a fight they attack at random
Difficulty... 200 Medium

combat

1 Sea Hag

At a pretty seaweed garden near a deep hole (close by is a deep depression)
They are a shapechanger
In a fight they prefer to capture their foes
Possibly... during the fight the weather changes for the better
Difficulty... 450 Deadly

combat

2 Giant Octopi

At an area of living coral (close by is a smooth rock)
They are strong swimmers (extra speed)
In a fight they run and hide if things go badly
Possibly... during the fight a trap is sprung
Difficulty... 600.0 Deadly

combatseamonster

1 Plesiosaurus

At a decorated coral-carved hall (there is an engraving here in Aquan)
They are exploring a cave mouth
In a fight they attack whoever is nearest
Difficulty... 450 Deadly