The deep continental margins were once perceived as monotonous mud slopes of limited ecological or environmental concern. Technological advances now reveal unexpected diversity, with a mosaic of lush habitats and ecosystems that support varied and unusual species fundamental to the health of the ocean and our own lives. Join Scripps biological oceanographer Lisa Levin as she reveals how changes in ocean temperature and chemistry, as well as growing economic opportunities, are placing new pressures on deep-ocean ecosystems, just as we are getting to know them (#23108)