publish: true
aliases:
- Random Undersea Encounters
created: 2026-03-09T12:15:34.392-04:00
modified: 2026-03-09T12:15:34.392-04:00
published: 2026-03-09T12:15:34.392-04:00
tags: - ttrpg-cli/compendium/src/5e/dmg
cssclasses: - json5e-note
obsidianUIMode: preview
Random Undersea Encounters
Source: Dungeon Master’s Guide p. 116
Random Undersea Encounters
| d12 + d8 | Encounter |
|---|---|
| 2 | Sunken ship covered in barnacles (25 percent chance that the ship contains treasure—roll randomly on the treasure tables in chapter 7) |
| 3 | Sunken ship with reef sharks (shallow waters) or hunter sharks (deep waters) circling around it (50 percent chance that the ship contains treasure—roll randomly on the treasure tables in chapter 7) |
| 4 | Bed of giant oysters (each oyster has a 1 percent chance of having a giant 5,000 gp pearl inside) |
| 5 | Underwater steam vent (25 percent chance that the vent is a portal to the Elemental Plane of Fire) |
| 6 | Sunken ruin (uninhabited) |
| 7 | Sunken ruin (inhabited or haunted) |
| 8 | Sunken statue or monolith |
| 9 | Friendly and curious giant sea horse |
| 10 | Patrol of friendly merfolk |
| 11 | Patrol of hostile merrow (coastal waters) or sahuagin (deep waters) |
| 12 | Enormous kelp bed (roll again on the table to determine what’s hidden in the kelp bed) |
| 13 | Undersea cave (empty) |
| 14 | Undersea cave (sea hag lair) |
| 15 | Undersea cave (merfolk lair) |
| 16 | Undersea cave (giant octopus lair) |
| 17 | Undersea cave (dragon turtle lair) |
| 18 | Bronze dragon searching for treasure |
| 19 | Storm giant walking on the ocean floor |
| 20 | Sunken treasure chest (25 percent chance that it contains something of value—roll treasure randomly using the tables in chapter 7) |
| ^random-undersea-encounters |