We are diving today at a depth of about 5,000 meters on the
north side of Mona Seamount which borders the southern edge
of the Puerto Rico Trench. We're not sure what to expect
during this dive. They almost look like columns. Yeah, it
looks like a underwater city or something. Quite a bit of life
here. This includes sponges and corals and anemones. Couple
of polynoid polychaete worms. And a couple of fishes.
These depths generally are pretty poorly explored some of
the most unexplored on Earth.