I visited the beach every day last week, and was in the water almost every day. I saw no signs whatsoever of the garbage problem described by the original poster.
Aside from a few floating plastic bottles tossed by tourists, there was no trash problem in the water or on the beach that I saw.
A few weeks ago, I noticed a bunch of trash being thrown overboard from a diving party boat, and that bunch of trash floated around for a considerable amount of time, but overall, the bay seems fairly clean to me.