SIX (6) WW2 US M10 Tank Destroyers in Fagg Reef, La Union. Many years ago there used to be just four. I guess they discovered another 2, so the total so far now is 6. These are intact. The story is that US forces dumped these and other stuff into the sea rather than donate them to the Philippines. A dive operation named Ocean Deep regularly conducts dive tours to the tanks, as they are considered a dive site and are a point of interest.
Fagg Reef Tanks - Of the 675, M10A1E tanks built at Grand Blanc Arsenal between Sept., l943 and November, l943, 300 were left with the original 3 in. gun and an additional 2,500-pound weight to counter balance the turret.
3 of them together and one to the east now rest in 135 Feet of water.
Another is located in 200 feet of water along with other metal, which was dumped there after WWII. (This is from an old diving magazine, before the discovery of the additional two (2) M10A1E's)
After the printing of the magazine article, one these M10A1E's was dragged into shallow water, to make it more accesible to novice divers.
I saw a lot of other things too... Japanese water canteens, various calibers of ammunition (a lot of US .50 with WW2 dates) and things I didnt bother picking up to check out (I regret this, I should have).