That Ancient Aliens show can really suck you in.
Not sure if this has already been posted, but I did a little research about Hy-Brasil and the possibility of diving off the coast of Ireland and stumbled across the Integrated Mapping For the Sustainable Development of Ireland's Marine Resource (INFOMAR). It is a program funded by the Irish Government to map out the seabed around Ireland.
A lot of the data can be viewed with this interactive map.
http://spatial.dcenr...sp?site=INFOMAR
If you click on Zoom Location on the top and then hit Zoom to WGS84 Lat / Long Coordinate, you can enter the coordinates provided by Jim's binary code. For Longitude, enter -13 13 12.69. For Latitude, enter 52 09 42.532. You can select the zoom width or use the zoom tool at the top. When you do this, you can clearly see a circular sunken island under water. I'm just kidding.. there doesn't appear to be anything there (but it is still fun to look around). One cool feature they offer is the location of sunken ship wrecks that they have come across. I wonder if there is any treasure in these ships?
The data can also be downloaded and viewed in Google Earth.
::EDIT::
I forgot to mention that although these coordinates don't show anything... If you look between 3h and 3b, there is a section of seabed that is relatively shallow.
Edited by XanderChris, 21 June 2011 - 05:00 AM.