On this project we have encountered many species of invertebrates living together on the steep canyon walls. Here an octopus, basket star, bivalves, and dozens of cup coral all share the same overhang in Hydrographer Canyon.. The cup corals are Desmophyllum, one of the species targeted by geneticists for taxonomic study. Hydrographer Canyon is part of the newly created Northeast Canyons and Seamounts Marine National Monument. This photo was taken during the 2013 Deepwater Canyons expedition of the NOAA Okeanos Explorer.