Subject: How dangerous is dumping nuclear waste in the sea?

With all the recent news coverage about the sunk Russian nuclear sub, I 
read some articles about how Russia, in the past, routinely dumped nuclear 
waste into the sea. What upset me most was that nuclear waste was being 
irresponsibly dumped in areas where a lot of fishing goes on, like in the 
Sea of Japan. First, I was wondering if this has or will lead to a major 
health problem. Second, once the waste is dumped, is there any way to 
clean it up?

Re: How dangerous is dumping nuclear waste in the sea?