Take the deep ocean, for example, where mineral-laden fluid superheated by magma gushes from hydrothermal vents. Who knows—maybe we’ll find new antimicrobials when we start to look in deep ocean habitats.”The deep ocean has already given us compounds to treat cancer, inflammation, and nerve damage. But breakthroughs have also come from the ocean depths in the form of diagnostic tools. Identifying microbial processes in the deep ocean is an essential first step for discerning human applications, says WHOI microbiologist Julie Huber. But hydrothermal vents have a remarkable diversity of microbes, including genetic diversity.