Deep-sea habitats in the national marine sanctuaries off the West Coast are home to vibrant deep-sea coral and sponge communities. These deep-sea invertebrates provide refuge and food for many other species of invertebrates and fishes. Visit this Story Map to learn more about the locations and unique ecology of deep-sea corals. Explore techniques scientists at national marine sanctuaries use to study deep water habitats, and the threats these fragile animals face. Learn ways you can protect these extraordinary deep-sea communities.