TWO SIMILAR STORIES. WATCH THE WATER. Underwater bases perhaps?!

https://www.bbc.com/news/world-asia-india-48610928

Indian magician, who attempted to recreate Harry Houdini's famed trick by jumping shackled into a river, is feared dead.

Chanchal Lahiri was meant to escape and swim to safety but did not emerge from the Hooghly river in West Bengal state.

https://newyork.cbslocal.com/2019/06/15/hudson-river-missing-swimmer-north-carolina/

Missing Swimmer Lost During Hudson River Marathon Identified, Search Continues