When I looked at the large areas that were colored in, I thought that was where they'd spent more time and were looking at something. It seemed to me to be south of Brownsville and Galveston were getting the big looks. I know almost no one has the funding to bring it up from that depth but it reminds me of that 'dig' National Geo did years ago where they pumped the water out of a 'tank' they'd set for one of the explorer's ships. Can't remember if it was Cortez or somesuch.

Pam