Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
Lots of the folks here take pictures of finds and beach shots too. See some of the Gravediggers posts. Underwater shots at a beach are usually of poor quality because of turbulence and silt in the water.