There's stuff there. The impact with the water tears a lot of stuff off. One thing to think about. Watch a swimming beach on any warm day. Compare the volume of folks out on the dive platform Vs. all those wading and paddling in 2' of water. I think you'll find the most stuff where most of the people spend their time. When I dive a beach, I do all the shallow stuff first and if I have time I take a few tours under the diving/swimming float. Many of the best finds are in water about 18" deep. Only use the dive gear so I can see what I am after and I can fan the sediment away from the target. Just easier recovery in a bottom with rocks and gravel than a sand scoop. Jim