The Arctic Ocean is more than just icy waters, it harbors vibrant ecosystems — but it also harbors valuable oil, gas, and ...

Thomas said. "The Indian Ocean has a variety of complex and interesting deep-sea ecosystems across basins, trenches, seamounts and ridges." The review looked at major seafloor features ...

the deep sea trenches, and the origin of the midocean ridges. Hess's puzzling guyots fit into the sea-floor spreading picture, as well. It's believed they were once-active volcanoes which rose ...