Treasure hunters search NYC's East River after claim that mammoth bones were dumped there in the 1940s

Ask people what you might find buried in the muck at the bottom of New York City's East River and they'd likely say "mob boss" before thinking of mammoth bones.

But several groups of treasure hunters have taken to the waterway in recent weeks after hearing a guest on comedian Joe Rogan's podcast claim a boxcar's worth of potentially valuable prehistoric mammoth bones was dumped in the river in the 1940s.

Despite a lack of evidence to back up the story, treasure seekers using boats, diving apparatuses and technology like remote-operated cameras have gone searching, in hopes the murky waters are hiding woolly mammoth tusks.