The Water Civilization
(the following is compiled from information given on the Wizards Of The Coast Official Duel Masters Site from the Creature Profiles of J. Kovach - currently unaltered)

The world of Water is half-land, half-sea. Inhabitants, who once lived only in water, have had to learn to adapt to both in their search for sustainable environments.

Because energy resources are more abundant there, cities are built in water. In spite of the oceanic depths, they are clean and bright, well lit by luminous bodies. At the center of the main metropolitan area is the Tower, shaped like a spiraling strand of DNA, where the Cyber Lords float in their cylinders. Surrounding the Tower are transparent buildings, constructed from solidified seawater that can be altered as necessary.

Although not common knowledge, the source of energy for this civilization is found in a hidden ocean current. Those that possess this secret knowledge make up a powerful few.

Inhabitants of the Water civilization worship technology. They prefer study and research to real action, and in wartime depend on strategies and tactics rather than direct attack. Controlled by Cyber Lords, many water creatures have a chip installed in their bodies. They communicate and exchange information telepathically. Those with higher intelligence are able to alter their body shape in response to the environment. They can also manipulate the seawater around them, transforming it into a weapon, armor, clothing, or transportation suitable for land or sea.

80% of this planet's surface is covered with water, making it vast, wild, and teeming with life. Rotation of the world on its axis causes the water to circulate away from its equator, creating many differing currents, both deep and shallow. The creatures of the Water Civilization use these currents as a massive and never-ending source of power. Metropolitan, once the largest and most advanced city in the Water Civilization, was located along a very strong current that was kept secure and secret from other Civilizations. Eventually, however, the current was followed, and the enemies of Water discovered Metropolitan. Much of the civilization of the deep was destroyed in battles stemming from the discovery of this and other hidden currents, including that beloved and ancient city. It was soon discovered that the Fire Civilization was to blame for the unwarranted attacks beneath the sea. The Cyber Lords began to ally with both the Civilization of Light and their stygian enemies, the Dark Civilization, to gain an edge against the fierce, warrior races of Fire. Although tense and strained, this alliance still exists in the modern world. This relationship and the advent of advanced technology has allowed the Water Civilization to cause more damage to its enemies than any other race on the planet.