Undersea Adventures

[Aeolius]

Assume that your next campaign will be set underwater and will draw heavily from supplements such as Stormwrack, Into the Blue, and The Deep. Player characters must be able to swim (have a swim speed) and breathe underwater (aquatic or amphibious) without the use of magic.

Given my preferences, the campaign would draw from my interests in marine biology and my hobby of keeping saltwater aquariums, coupled with my fascination with various mythological creatures such as hags, dragons, and demons.

Be aware that life underwater has its limitations; typical potions are all but impossible to imbibe, paper scrolls will quickly disintegrate, and typical metal items are subject to corrosion. Many typical spells may not suitable for underwater casting. Treasure may be similarly altered, as many undersea races value rare corals, pearls, and shells far more than coins and gemstones.

Keep in mind that some of the best inspiration for an underwater campaign can come from the Discovery Channel and Animal Planet, visiting your local aquarium or fish store, and perusing ocean-related materials in a bookstore.

With that in mind, what are your preferences, for such an adventure? What would you expect to see, in an undersea game? What would make the campaign memorable, enjoyable, and enduring?