I would say that it's the same thing as
http://home.student.uva.nl/kristian..../bluehole.html
but under water.

Wayne Sallee
Wayne's Pets



Wayne Sallee wrote on 10/24/2006 2:13 PM:
That's from where I've been landing my space ship over there on the
weekends :-)

Wayne Sallee
Wayne's Pets



Dragon777 wrote on 10/24/2006 1:31 PM:
Can someone explain what causes these circular features?

http://www.satellitediscoveries.com/...es/nassau.html

thank you!