Human Journey

Quantum Correlations: Down There: Life Under the Sediments Under the Sea

By Alaina G. Levine

There’s buried treasure beneath the sea. James Cameron isn’t looking for it, it’s not the Heart of the Ocean, and it’s not near those fabulous deep sea vents we’ve come to adore. Rather, the prize of which I write is literally under the ocean – it’s the creatures that inhabit the sediment on the floor of the world and the basement rock below.

There’s an ocean of possibilities of what types of critters might live in those environs and how they do it. It’s a huge environment, after all. 70% of the planet is covered in water and precious little of the sea’s floor and cellar rock has been explored. “We simply have no idea what’s down there,” teases Jan Amend, a University of Southern California Earth Sciences and Biological Sciences professor who is part of a new research enterprise that aims to find out what’s going on…down there.

The one and a half year old Center for Dark Energy Biosphere Investigations (C-DEBI) is a National Science Foundation-funded Science and Technology Center whose “mission is to explore life beneath the seafloor and make transformative discoveries that advance science, benefit society, and inspire people of all ages and origins.” The $25 million endeavor administratively sits at the University of Southern California, but its scientists are scattered at universities around the country including the University of Rhode Island and the University of Alaska.

This subsurface biosphere is not a new concept; in fact, in 1992, Thomas Gold argued the presence of a “deep, hot biosphere”, aided by geological energy sources. “Whitman et al., [1998] expanded this concept, collating available data on aquatic, soil, and subseafloor microbes, and concluded that the majority of biomass on Earth may be harbored below the surface of the Earth,” as explained on C-DEBI’s website.

Unidentified DAPI stained microorganisms within sediments as seen through a confocal microscope (courtesy Dr. Heath Mills, Texas A&M University)

But studying the dark energy biosphere is considered to be a fairly new field. The significance of C-DEBI is that it serves as a clearing house to organize collaborations, collect data and specimens, and oversee or contribute to research projects and support. For example, three missions are currently being organized by the Integrated Ocean Drilling Project (IODP), an international partnership engaged in deep-sea scientific drilling, in conjunction with C-DEBI executive committee members. “C-DEBI will seize a unique opportunity to bundle these diverse projects, to accomplish an integrated, global scientific mission,” according to its promotional materials.

Amend, who serves as C-DEBI’s Associate Director, recently took me on a mental voyage to understand the implications of the research. It is very much like “discovering a completely new world,” he says, equating it with exploring outer space. Scientists know that there are cute little microbes hanging around in those sediments, but countless questions abound. How are these organisms related to other ocean-dwelling species? What are their temperature and pressure limits? What’s their chemical and biological make-up?

Jason Sylvan, C-DEBI Postdoctoral fellow at USC, works in the cold room aboard the JOIDES Resolution. He is trying to culture microbes from subseafloor rocks collected during IODP expedition 330 to the Louisville Seamount Chain. Credit: Lisa Strong.

He and his team are motivated to understand how distantly (or closely) related the single-celled varmints are to other life on Biosphere 1. “We expect to find branches on the tree of life that have not been seen before and are only distantly related to known species,” says Amend. Researchers will utilize methodologies such as DNA sequencing to clarify connections to other microbes on the planet.

Another particularly tantalizing query relates to the microorganisms’ energy sources. “We don’t know how they make a living down there,” he says. There’s no light, so photosynthesis is not in the picture. There’s not much organic food – “no Twinkies of hamburgers” are to be found, he jokes. So the creatures are probably relying on some sort of inorganic chemistry for survival, processing compounds like iron and sulfur for sustenance. “We’ll probably find interesting new metabolisms.” The basement rock is permeable, he explains, so fluid ebbs and flows, bringing in potential nutrients and clearing out waste products.

With more tools and better coordinated research systems in place to study the dark energy biosphere, Amend postulates that scientific and technical ramifications of C-DEBI’s findings will be game-changing. “New organisms provide a new sandbox to play in,” he hints. They may discover catalysts and enzymes with possible technological applications in myriad fields including energy, medicine, and biotech.

And there’s another potential booty to be found by digging under the ocean – scientific knowledge which could enhance our understanding of the planetary carbon cycle and climate change. We don’t know how the subsurface and surface carbon cycle is connected –yet, says Amend. The stakes are high. According to NASA, “the total amount of carbon in the ocean is about 50 times greater than the amount in the atmosphere, and is exchanged with the atmosphere on a time-scale of several hundred years. At least 1/2 of the oxygen we breathe comes from the photosynthesis of marine plants. Currently, 48% of the carbon emitted to the atmosphere by fossil fuel burning is sequestered into the ocean.”

The more we fathom what’s going on in the entire ocean, including below the water itself, the better our understanding of what’s happening to our planet. C-DEBI scientists’ findings “could have implications on lots of big ticket items like the carbon cycle and climate change,” clarifies Amend. So even though “most subsurface environments are not as sexy or dramatic as the [undersea] vents,” he jests, dark energy biosphere experts will continue their pursuit of trying to illuminate the creatures and their habitats…down there.

Alaina G. Levine is a freelance science writer, professional speaker, corporate comedian, and President of Quantum Success, a leadership and career consulting enterprise. She can be contacted through her website at

Alaina G. Levine is science journalist, professional speaker, corporate comedian, and science and engineering careers consultant. As President of Quantum Success Solutions, a career consulting enterprise with a focus on advancing the professional development expertise of scientists and engineers, she has been advising emerging and established scientists and engineers about their careers for over a decade, and has personally consulted with hundreds of early- and mid-career scientific professionals. The author of over 100 articles pertaining to science, science careers and business in such publications as Science, Nature, Scientific American Online, IEEE Spectrum, New Scientist, and Smithsonian, she was recently named a Contributor to National Geographic, where she writes articles and blogs for NatGeo News Watch. Levine also writes the Careers Column for The Euroscientist and the Profiles in Versatility career column for the American Physical Society's national publication, APS News. Previously, she directed a master's program in science and business and taught entrepreneurship to science graduate students at the University of Arizona. She has given over 450 workshops and seminars around the country and in Europe. Levine holds degrees in mathematics and anthropology from the University of Arizona, studied abroad at the American University in Cairo as a DoD National Security Education Program/Boren Fellow, and pursued grant-funded research in cosmology and mathematics history. Recently, she was honored with a travel fellowship to cover the 62nd Lindau (Physics) Nobel Laureates Meeting in Lindau, Germany (which she used to cover the meeting for National Geographic and APS News), during which she broke the Higgs news for NatGeo. She also has been honored as a Logan Science Journalism Fellow at the Marine Biological Laboratory, Robert Bosch Stiftung Science Journalism Fellow and an Institutes for Journalism & Natural Resources Fellow. In addition, Levine is an award-winning entrepreneur, winning more than 20 business and leadership awards in under a decade, including being named one of the youngest YWCA Women on the Move winners; the Tucson Leader of the Year, an honor previously bestowed upon former US Surgeon General Richard Carmona; and a Tucson 40 Under 40 Leader, an honor she shared with former US Congresswoman Gabrielle Giffords. Read her complete bio at

About the Blog

Researchers, conservationists, and others share stories, insights and ideas about Our Changing Planet, Wildlife & Wild Spaces, and The Human Journey. More than 50,000 comments have been added to 10,000 posts. Explore the list alongside to dive deeper into some of the most popular categories of the National Geographic Society’s conversation platform Voices.

Opinions are those of the blogger and/or the blogger’s organization, and not necessarily those of the National Geographic Society. Posters of blogs and comments are required to observe National Geographic’s community rules and other terms of service.

Voices director: David Braun (

Social Media