"I’m a scuba diver and one thing that really scared me when I first started off diving, you hear SO MUCH more underwater then you ever will above on the surface, I’m not even talking about like the shifting or just the water itself moving, your hear things like fish clicking and other things like that, cuz underwater sounds move and travel a lot more so you hear a lot more and much quicker, was pretty out of nowhere when I first went under"
Not a bad idea but you might want to avoid the word dumping.
Burial at sea is the more common term.
More likely than not the writer was referring to Hawley Harvey Crippen. Check out the article at www.thehistorypress.co.uk/articles/the-notorious-case-of-dr-crippen/