no sauce just theory. maybe an autist with super search can confirm?

watch the water. all kinds of water receding from shores. stories all over if you look. theories range. geoengineering a huge hidden storm. sand dredging off shore.

my theory… all those secret tunnels are filled with water. courtesy of /ourguys. i wouldn't know where to begin looking for proof but it makes sense to me. tunnels are below sea level. easy to flood and render them useless. dunno, just a thought.