"The sonar we use for deep sea mapping really screws up a number of species especially whales, dolphins and porpoises. Imagine walking around and a tornado alarm decibel-level noise triggers right next to you. We do that every time we use that high-powered sonar and it basically f's up their own sonar abilities causing them to be unable to communicate and navigate."
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/