Bob Crantz wrote:
Why not coat the prop with a highly radioactive substance. That will kill
whatever wants to grow and the water would acts as shielding so the
radiation wouldn't travel far.


And the blue glow makes a nice effect for night snorkeling
around the anchorage.

DSK

OK, Just put tritium in the prop coating. It emits very short range
betas and also produces a bluish glow.