Aquatic Encounter Tables

Aquatic tables are divided for separate sets of encounters on the surface and at depths. There are a number of special aquatic encounters:

Ice: This includes any manner of icebergs and ice floes. Ice does 1d10 damage every round it is in contact with the ship, ignoring damage threshold. Additionally, icebergs at sea have a 10% chance of opening a hole in the hull of the ship.
Ghost Ships: Determine the type of ship by random roll on DMG 119. Crew is 40% 10-40 skeletons, 40% 10-40 zombies, 20% 10-20 ghouls. Officers are 40% 1-4 wights, 40% 1-3 wraiths, 15% 1-2 ghosts, 5% Lich or Vampire. Ghost ships can be sighted at any time but usually only attack at night.
Shipwrecks: Often have treasure and/or are inhabited. 50% still carry treasure hoard of appropriate hoard class. 80% are inhabited by monsters with equal chances of 2-24 lacedons ghouls of original crew or else other monsters from the corresponding table.
Seaweed: Thick beds of seaweed slow ships by 50% and are inhabited by monsters roll again on table 40% of time.
Land Encounters: Roll on outdoor table corresponding to nearest land. Disregard result if not applicable.
Islands: May have fresh water, game, and/or land encounters at DM's discretion. 10% of islands are surrounded by reefs that do 10d20 damage to ships, with 20% chance of opening a hole in the hull.
Whirlpools: 75% of whirlpools only affect small craft up to keelboat). Ships are dragged to bottom at a cumulative 0.5 mph per round 0.5 mph first round, 1 mph second round...), and ships must exceed this rate to escape. Ships are dragged to the bottom in 20 rounds. Up to 25% of whirlpools are also portals the elemental plane of water.

Surface
Die Roll	Creature Encountered	Source	Number Appearing
2	Dragon Turtle	MM1 119	1
3	Harpy	MM1 181	2-12
4	Hag, Green	MM1 177	1
5	Naga, Water (neutral Spirit)	MM1 234	1-4
6	Lacedon (Ghoul)	MM1 148	2-24
7	Turtle, Giant (Giant Croc.)	MM1 324	1-4
8	Swan		2-16
9	Ice
10	Land Encounter
11	Man, Merchant (Commoner)	MM1 345	50-300
12	Land Encounter
13	Island
14	Man, Buccaneer (Bandit)	MM1 343	50-300
15	Merrow	MM1 219	2-24
16	Eagle, Giant	MM1 324	1-20
17	Scrag (Troll, regen. in H2O)	MM1 291	1-6
18	Nixie (Pixie w/1 yr. charm)*	MM1 253	20-80
19	Dragon, Black	MM1 88	1-4
20	Swanmay	MM2 116	1 or 2-5
* One spell per 10 Nixies.
Depths
Die Roll	Creature Encountered	Source	Number Appearing
2	Giant, Storm	MM1 156	1-4
3	Shark, Giant	MM1 328	1
4	Quipper, Swarm of	MM1 338	1-4
5	Vodyanoi (U. Hulk, no conf.)	MM1 292	1-3
6	Sirine	MM2 109	1 or 2-8
7	Lacedon (Ghoul)	MM1 148	2-24
8	Kopoacinth (Gargoyle)	MM1 140	2-16
9	Scrag (Troll, regen. in H2O)	MM1 291	1-6
10	Crab, Giant	MM1 324	2-12
11	Otter (Weasel)	MM1 340	2-8
12	Octopus	MM1 333	1-10
13	Shipwreck
14	Merrow	MM1 219	2-24
15	Turtle, Giant (Giant Croc.)	MM1 324	1-4
16	Lamprey, Giant (Stirge)	MM1 284	1-4
17	Hippocampus	Sacrosanct	2-8
18	Otter, Giant (Giant Weasel)	MM1 329	1-4
19	Aboleth	MM1 13	1-4
20	Nereid	MM2 95	1-4

Surface
Die Roll	Creature Encountered	Source	Number Appearing
2	Invisible Stalker	MM1 192	1
3	Whirlpool
4	Dragon, White	MM1 100	1-4
5	Ghost Ship
6	Killer Whale	MM1 331	1-8
7	Turtle, Giant (Giant Croc.)	MM1 324	1-4
8	Sea Lion	Sacrosanct	3-12
9	Man, Merchant (Commoner)	MM1 345	50-300
10	Shark, Hunter	MM1 330	3-12
11	Shark, Reef	MM1 336	3-12
12	Man, Pirate (Bandit)	MM1 343	50-300
13	Ice
14	Dolphin (LG Reef Shark)	MM1 336	2-20
15	Island
16	Scrag (Troll, regen. in H2O)	MM1 291	1-6
17	Will-o'-Wisp	MM1 301	1 or 1-3
18	Seawolf (Werewolf)	MM1 211	4-16
19	Selkie (Tribal Warrior)	MM1 350	1 or 12-30
20	Dragon Turtle	MM1 119	1
Depths
Die Roll	Creature Encountered	Source	Number Appearing
2	Shark, Giant	MM1 328	1
3	Water Weird	MM1 299	1-3
4	Seawolf (Werewolf)	MM1 211	4-16
5	Urchin, Green	FF 92	1-4
6	Urchin, Red	FF 92	1-4
7	Dolphin (LG Reef Shark)	MM1 336	2-20
8	Elf, Aquatic (Scout)	MM1 349	20-200
9	Shark, Reef	MM1 336	3-12
10	Crab, Giant	MM1 324	2-12
11	Naga, Water (neutral Spirit)	MM1 234	1-4
12	Shark, Hunter	MM1 330	3-12
13	Killer Whale	MM1 331	1-8
14	Sea Lion	Sacrosanct	3-12
15	Kopoacinth (Gargoyle)	MM1 140	2-16
16	Octopus	MM1 333	1-10
17	Octopus, Giant	MM1 326	1-3
18	Green Slime	DMG 105	1-6
19	Aboleth	MM1 13	1-4
20	Empyrean	MM1 130	1-2(10%)

Surface
Die Roll	Creature Encountered	Source	Number Appearing
2	Wasp, Giant	MM1 329	1-20
3	Wyvern	MM1 303	1-6
4	Lizard Man	MM1 204	10-40
5	Ooze, Crystal (Clear Gray Ooze)	MM1 243	1-2
6	Man, Buccaneer (Bandit)	MM1 343	50-300
7	Merrow	MM1 219	2-24
8	Swan		2-16
9	Crocodile	MM1 320	3-24
10	Man, Merchant (Commoner)	MM1 345	50-300
11	Throat Leech	FF 88	1-6
12	Crane, Giant Giant Vulture)	MM1 329	1-20
13	Land Encounter
14	Crab, Giant	MM1 324	2-12
15	Frog, Giant	MM1 325	5-40
16	Sirine	MM2 109	1 or 2-8
17	Otter, Giant (Giant Weasel)	MM1 329	1-4
18	Scrag (Troll, regen. in H2O)	MM1 291	1-6
19	Dragon, Red	MM1 97	1-4
20	Boobrie (Roc mvt 40' fly 40')	MM1 260	1-2
Depths
Die Roll	Creature Encountered	Source	Number Appearing
2	Mephit, Mud	MM1 216	1-8
3	Salamander, Giant (Giant Lizard)	MM1 326	2-12
4	Beaver, Giant (Giant Weasel)	MM1 329	10-40
5	Lamprey, Giant (Stirge)	MM1 284	1-4
6	Lizard Man	MM1 204	10-40
7	Turtle, Giant (Giant Croc.)	MM1 324	1-4
8	Kopoacinth (Gargoyle)	MM1 140	2-16
9	Beetle, Giant Water (no gland)	MM1 325	1-12
10	Spider, Giant Water	MM1 328	1-6
11	Throat Leech	FF 88	1-6
12	Crocodile	MM1 320	3-24
13	Otter, Giant (Giant Weasel)	MM1 329	1-4
14	Crab, Giant	MM1 324	2-12
15	Merrow	MM1 219	2-24
16	Lacedon (Ghoul)	MM1 148	2-24
17	Octopus	MM1 333	1-10
18	Green Slime	DMG 105	1-6
19	Shipwreck
20	Lizard Man with King	MM1 204	10-40

Surface
Die Roll	Creature Encountered	Source	Number Appearing
2	Invisible Stalker	MM1 192	1
3	Manticore	MM1 213	1-4
4	Ghost Ship
5	Whirlpool
6	Lizard Man	MM1 204	10-40
7	Lamprey, Giant (Stirge)	MM1 284	1-4
8	Island
9	Dinosaur, Plesiosaurus	MM1 80	1-3
10	Man, Merchant (Commoner)	MM1 345	50-300
11	Shark, Hunter	MM1 330	3-12
12	Killer Whale	MM1 331	1-8
13	Seaweed
14	Man, Pirate (Bandit)	MM1 343	50-300
15	Will-o'-Wisp	MM1 301	1 or 1-3
16	Crab, Giant	MM1 324	2-12
17	Lacedon (Ghoul)	MM1 148	2-24
18	Dragon, Bronze	MM1 107	1-4
19	Seawolf (Werewolf)	MM1 211	4-16
20	Shark, Giant	MM1 328	1
Depths
Die Roll	Creature Encountered	Source	Number Appearing
2	Aboleth	MM1 13	1-4
3	Kraken	MM1 196	1
4	Killer Whale	MM1 331	1-8
5	Lamprey, Giant (Stirge)	MM1 284	1-4
6	Shark, Giant	MM1 328	1
7	Sea Lion	Sacrosanct	3-12
8	Urchin, Black	FF 92	1-6
9	Dinosaur, Plesiosaurus	MM1 80	1-3
10	Sea Horse, Giant	MM1 328	1-20
11	Shark, Reef	MM1 336	3-12
12	Shark, Hunter	MM1 330	3-12
13	Seaweed
14	Quipper, Swarm of	MM1 338	1-4
15	Sea Snake, Giant Poisonous	MM1 327	1-6
16	Dragon Turtle	MM1 119	1
17	Mottled Worm (Purple Worm)	MM1 255	1-2
18	Seawolf (Werewolf)	MM1 211	4-16
19	Eye of the Deep (Beholder)	MM1 28	1
20	Empyrean	MM1 130	1-2 (10%)

Surface
Die Roll	Creature Encountered	Source	Number Appearing
2	Froghemoth	—	1
3	Couatl	MM1 43	1-4
4	Catfish, Giant (Giant Shark)	MM1 328	1
5	Ooze, Crystal (Clear Gray Ooze)	MM1 243	1-2
6	Wyvern	MM1 303	1
7	Spider, Giant Water	MM1 328	1-6
8	Crab, Giant	MM1 324	2-12
9	Man, Merchant (Commoner)	MM1 345	50-300
10	Land Encounter
11	Crocodile	MM1 320	3-24
12	Throat Leech	FF 88	1-6
13	Crane, Giant (Giant Vulture)	MM1 329	1-20
14	Frog, Giant	MM1 325	5-40
15	Hippopotamus (Rhinoceros)	MM1 336	2-12
16	Sirine	MM2 109	1 or 2-8
17	Merman	MM1 218	20-200
18	Manticore	MM1 213	1-4
19	Kelpie	Sacrosanct	1-4
20	Thork	Ultanya	1-6
Depths
Die Roll	Creature Encountered	Source	Number Appearing
2	Shark, Giant	MM1 328	1
3	Blight, Vine	MM1 32	2-8
4	Kelpie	Sacrosanct	1-4
5	Vodyanoi (U. Hulk, no conf.)	MM1 292	1-3
6	Behemoth (Mammoth)	MM1 332	1-4
7	Merman	MM1 218	20-200
8	Quipper, Swarm of	MM1 338	1-4
9	Beetle, Giant Water (no gland)	MM1 325	1-12
10	Sea Horse, Giant	MM1 328	1-20
11	Spider, Giant Water	MM1 328	1-6
12	Throat Leech	FF 88	1-6
13	Scrag (Troll, regen. in H2O)	MM1 291	1-6
14	Dinosaur, Plesiosaurus	MM1 80	1-3
15	Kopoacinth (Gargoyle)	MM1 140	2-16
16	Bunyip	Inchoroi	1
17	Lizard Man	MM1 204	10-40
18	Crocodile, Giant	MM1 324	1 or 2-12
19	Hag, Sea	MM1 179	1-4
20	Water Weird	MM1 299	1-3

Aquatic Encounters

Aquatic Random Encounter Tables

COLD FRESHWATER

COLD SALTWATER

TEMPERATE FRESHWATER

TEMPERATE SALTWATER

TROPICAL AND SUBTROPICAL FRESHWATER

TROPICAL AND SUBTROPICAL SALTWATER