EuroGraphics Emerald Bay California 1000-Piece Puzzle. In 1969, Emerald Bay was recognized as a National Natural Landmark by the Federal Department of the Interior. In 1994, California State Parks included the surrounding water of the bay as a part of the park, making Emerald Bay one of the first underwater parks of its type in the state, protecting the various wrecks and other items on the bay's bottom. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time.