Eric Sedletzky
Contributor
I think yoir right, the amount of contamination would be almost nil when taken into account the size of the oceans plus all the other waste that finds itself in the ocean around the world. Probably the biggest danger would be to the diver or other organisms right in the middle of the plume.I am not going to say you are wrong, the amount of lead leaching into the ocean from dive weights is approaching zero compared to the millions of fishing weights that are lost from every fishing pier every day. I take my weights in and out of the water on a regular basis and it probably totals forty or so hours a year. In ponds and lakes you have a similar disconnect of leaching from lost weights. There is a natural occurrence of lead at some level since it is a natural element in the environment. I wonder what the exposure for the diver is when he handles uncoated lead weights or the shot bags (I have picked up several of them from diving and tag sales). I also used to caste some of my own lead years ago.
As a side note, some pools don’t allow uncoated lead weights to be used.