Fathoming the Deep: Increasing Our Understanding of Deep-Sea Ecosystems In West Coast Sanctuaries
From the wild and scenic coast of Oregon to the soft-bottom habitats and deep-sea coral gardens off Southern California, the October 2020 expedition aboard exploration vessel (E/V) Nautilus – a joint expedition between NOAA and Ocean Exploration Trust (OET) – revealed a variety of habitats and marine life among the deep-sea canyons, seamounts, banks, and reefs within America’s West Coast sanctuaries.
The goal of the expedition was to conduct hundreds of hours of deep-sea remotely operated vehicle (ROV) dives and thousands of miles of seafloor mapping to shine new light on the little-known regions of the deep sea. Several incredible encounters made this expedition memorable, such as stunning views of shimmering methane seeps and ice-like hydrates, returning to an octopus nursery and a decomposing whale fall, discovering a graveyard of glass sponges in an unexpected location, and encountering some impressive fish assemblages and coral and sponge colonies.