We paddle the rivers, lakes, marshes, and bays in the Washington, D.C., area.  We get up close and personal with beautiful scenery and wildlife, we see things from the water that are not visible any other way, and we enjoy the special happiness -- a magical combination of tranquility and exhilaration --  that comes from being on the water.  Some of us paddle for the exercise, some to watch birds, some to reduce tension, and some to socialize.  But we all enjoy kayaking, and enjoy doing it togeth …