The Undersea Environment

The Undersea Environment is a 1983 role-playing game supplement, written by J. Andrew Keith for "Traveller", and published by Gamelords. "The Undersea Environment" is a book that details alien oceans, including factors such as pressure, gravity, temperature, decompression after dives, and undersea communication and combat. A companion adventure, "The Drenslaar Quest" was written by the same author.
Reception.
Tony Watson reviewed "The Mountain Environment" and "The Undersea Environment" together in "The Space Gamer" No. 72. Watson commented that "The tight focus and elaborate detail of these supplements is both their strength and weakness. Just about all aspects of mountain and undersea environments are covered, but I wonder just how much of this material is really going to make its way into the average adventure."