1) Basically you can adapt any dungeon map you have to an underwater enviroment. Just put a lot of underwater details, like barnacles, seaweed, ...sharks, mussels. A dungeon of a old temple can be a a dungeon of a lost temple in the ocean.
2) Chests may be huge sea-shells.
3) For side quests, old artefacts that are long lost are perfect for a underwater enviroment. Also use a lot of shipwrecks.
To add urgency to a situation you could have a leak spring that threatens to flood the entire dungeon, with the Players inside! The players could then attempt to close off sections, use mending, shape stone, shape water to control or repair the leak, or simply run. Maybe that would be the trap that springs after they beat the BBEG or take a specific item, like in the Disney movie Aladdin.
You can also have pools in the otherwise mostly dry underwater dungeon that lead to the outside, from the pools various creatures could hide, I had one game where Sahuagin hid in the pools and tried to pull the players in so that they would have to fight both drowning and the attacks of the Sahuagin.
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
They should definitely fend off Giant Eels that shoot lightning bolts from their tails. *nods*
Brilliant! I don't suppose you'd like to write up a stat block for them and put it on here?
GIANT LIGHTNING EEL Large beast, unaligned
Armor Class 13 Hit Points 42 (5d10 + 15) Speed 5 ft ., swim 30 ft.
STR 11 (+0) DEX 17 (+3) CON 16 (+3) INT 2 (-4) WIS 12 (+1) CHA 3 (-4)
Damage Resistances lightning Senses blindsight 60 ft ., passive Perception 11 Languages - Challenge 3 (700 XP)
Water Breathing. The eel can breathe only underwater.
ACTIONS Multiattack. The eel makes two bite attacks.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft ., one target. Hit: 10 (2d6 + 3) piercing damage plus 4 (1d8) lightning damage.
Lightning Jolt (Recharge 5-6). One creature the eel touches within 5 feet of it outside water, or each creature within 15 feet of it in a body of water, must make a DC 12 Constitution saving throw. On failed save, a target takes 13 (3d8) lightning damage. If the target takes any of this damage, the target is stunned until the end of the eel 's next turn. On a successful save, a target takes half as much damage and isn't stunned.
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
Actually, stats for Giant lightning Eels appears in Tales of the Yawing Portal.
Is it bad that I forgot I even had that book?
Maybe a little. Maybe not. How many books do you have?
Just in 5e? Nine
2 PHBs, MM, DMG, Volo's Guide, Yawning Portal, Out of the Abyss, Princes of the Apocalypse, and Curse of Strahd
Including 3e and 4e? I have no damn clue... Those were rough because every time a supplement came out, I had to have it (for some ungodly reason). My favorite books are probably the 4e Monster Manuals (I have 1, 2, and 3 and am constantly converting monsters for my campaigns) or the 3e Book of Challenges.
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
Actually, stats for Giant lightning Eels appears in Tales of the Yawing Portal.
Is it bad that I forgot I even had that book?
Maybe a little. Maybe not. How many books do you have?
Just in 5e? Nine
2 PHBs, MM, DMG, Volo's Guide, Yawning Portal, Out of the Abyss, Princes of the Apocalypse, and Curse of Strahd
Including 3e and 4e? I have no damn clue... Those were rough because every time a supplement came out, I had to have it (for some ungodly reason)
No SCAG?
I KNOW!!! I want to go get it, but I feel like my wife will murder me if I come home with another book (which is unfair since she is one of my PCs and only stands to gain from me having another book!)
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
Actually, stats for Giant lightning Eels appears in Tales of the Yawing Portal.
Is it bad that I forgot I even had that book?
Maybe a little. Maybe not. How many books do you have?
Just in 5e? Nine
2 PHBs, MM, DMG, Volo's Guide, Yawning Portal, Out of the Abyss, Princes of the Apocalypse, and Curse of Strahd
Including 3e and 4e? I have no damn clue... Those were rough because every time a supplement came out, I had to have it (for some ungodly reason)
No SCAG?
I KNOW!!! I want to go get it, but I feel like my wife will murder me if I come home with another book (which is unfair since she is one of my PCs and only stands to gain from me having another book!)
Actually, stats for Giant lightning Eels appears in Tales of the Yawing Portal.
Is it bad that I forgot I even had that book?
Maybe a little. Maybe not. How many books do you have?
Just in 5e? Nine
2 PHBs, MM, DMG, Volo's Guide, Yawning Portal, Out of the Abyss, Princes of the Apocalypse, and Curse of Strahd
Including 3e and 4e? I have no damn clue... Those were rough because every time a supplement came out, I had to have it (for some ungodly reason)
No SCAG?
I KNOW!!! I want to go get it, but I feel like my wife will murder me if I come home with another book (which is unfair since she is one of my PCs and only stands to gain from me having another book!)
Buy it for her?
Every Kiss Begins with SCAG! *jingle*
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Here my ideas:
1) Basically you can adapt any dungeon map you have to an underwater enviroment. Just put a lot of underwater details, like barnacles, seaweed, ...sharks, mussels. A dungeon of a old temple can be a a dungeon of a lost temple in the ocean.
2) Chests may be huge sea-shells.
3) For side quests, old artefacts that are long lost are perfect for a underwater enviroment. Also use a lot of shipwrecks.
Divertiti!
To add urgency to a situation you could have a leak spring that threatens to flood the entire dungeon, with the Players inside! The players could then attempt to close off sections, use mending, shape stone, shape water to control or repair the leak, or simply run. Maybe that would be the trap that springs after they beat the BBEG or take a specific item, like in the Disney movie Aladdin.
You can also have pools in the otherwise mostly dry underwater dungeon that lead to the outside, from the pools various creatures could hide, I had one game where Sahuagin hid in the pools and tried to pull the players in so that they would have to fight both drowning and the attacks of the Sahuagin.
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D&D Beyond FoundersSubmarine with PCs that can breathe/operate efficiently underwater, or is there some form of magic/transport involved?
Pun-loving nerd | Faith Elisabeth Lilley | She/Her/Hers | Profile art by Becca Golins
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"We got this, no problem! I'll take the twenty on the left - you guys handle the one on the right!"🔊
Lots of things will want to eat the PCs; everything from CR 0 quippers to CR 5 giant sharks.
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both" -- allegedly Benjamin Franklin
Tooltips (Help/aid)
They should definitely fend off Giant Eels that shoot lightning bolts from their tails. *nods*
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both" -- allegedly Benjamin Franklin
Tooltips (Help/aid)
Actually, stats for Giant lightning Eels appears in Tales of the Yawing Portal.
Click Here to Download my Lancer Class w/ Dragoon and Legionnaire Archetypes via DM's Guild - Pay What You Want
Click Here to Download the Mind Flayer: Thoon Hulk converted from 4e via DM's Guild
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both" -- allegedly Benjamin Franklin
Tooltips (Help/aid)
GIANT LIGHTNING EEL
Large beast, unaligned
Armor Class 13
Hit Points 42 (5d10 + 15)
Speed 5 ft ., swim 30 ft.
STR 11 (+0) DEX 17 (+3) CON 16 (+3) INT 2 (-4) WIS 12 (+1) CHA 3 (-4)
Senses blindsight 60 ft ., passive Perception 11
Languages -
Challenge 3 (700 XP)
Water Breathing. The eel can breathe only underwater.
Multiattack. The eel makes two bite attacks.
10 (2d6 + 3) piercing damage plus 4 (1d8) lightning damage.
within 5 feet of it outside water, or each creature within 15 feet
of it in a body of water, must make a DC 12 Constitution saving
throw. On failed save, a target takes 13 (3d8) lightning damage.
If the target takes any of this damage, the target is stunned until
the end of the eel 's next turn. On a successful save, a target
takes half as much damage and isn't stunned.
Click Here to Download my Lancer Class w/ Dragoon and Legionnaire Archetypes via DM's Guild - Pay What You Want
Click Here to Download the Mind Flayer: Thoon Hulk converted from 4e via DM's Guild
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
Click Here to Download my Lancer Class w/ Dragoon and Legionnaire Archetypes via DM's Guild - Pay What You Want
Click Here to Download the Mind Flayer: Thoon Hulk converted from 4e via DM's Guild
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.
"Any society that would give up a little liberty to gain a little security will deserve neither and lose both" -- allegedly Benjamin Franklin
Tooltips (Help/aid)
Click Here to Download my Lancer Class w/ Dragoon and Legionnaire Archetypes via DM's Guild - Pay What You Want
Click Here to Download the Mind Flayer: Thoon Hulk converted from 4e via DM's Guild
“It is a better world. A place where we are responsible for our actions, where we can be kind to one another because we want to and because it is the right thing to do instead of being frightened into behaving by the threat of divine punishment.” ― Oramis, Eldest by Christopher Paolini.