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

level: terrain: sources: type:

At a patch of dense algae (there is a large shoal of seahorses in the area)
They are watching a cave mouth
In a fight they attack whoever is causing them the most pain
Difficulty... 600.0 Deadly

At an imposing cliff and a garden of enchanted sea anemones (by an area of cultivated algae)
They are scavenging for valuables
In a fight they prefer to capture their foes
Possibly... they have mason's tools
Difficulty... 300 Hard

At an area of open water (it is sacred to a power of nature)
They are adapted to darkness
In a fight they used ranged attacks on foes with ranged weapons
Possibly... they have an intricate set of dragonchess with ivory pieces using creatures of the sea
Difficulty... 450 Deadly

At a bed of shell-studded sea anemones and a patch of sea anemones (there is the corpse of a kraken)
They are exploring a magical portal
In a fight they attack whoever is nearest
Possibly... during the fight opportunist(s) tries to steal mounts/backpacks or other loose equipment
Difficulty... 300.0 Hard

At a bed of shell-studded sea grass (there are many sahuagin bones)
They are strong swimmers (extra speed)
In a fight they run and hide if things go badly
Difficulty... 450 Deadly