He and his team knew the Titanic broke into two pieces, but nobody realized the debris field was a large as it is.
Upwards of 40 percent of the area where the Titanic sank has never been mapped or documented – until now.
Up next: 3-D images. If all goes according to the plan, those images will come to the surface by Saturday morning.
This underwater geology is science you can clearly follow with a good expert, so click on the video to follow what the maps mean.
Related links from Kerry Sanders:
Underwater equipment launched in Titanic search
Keeping an eye on the weather enroute to Titanic wreckage
Diving down to document Titanic debris