Life beyond Earth? Underwater caves in Bahamas could give clues

Discoveries made in some underwater caves by Texas A and M University at Galveston researchers in the Bahamas could provide clues about how ocean life formed on Earth millions of years ago, and perhaps give hints of what types of marine life could be found on distant planets and moons.

Tom Iliffe, professor of marine biology at the Texas A and M-Galveston campus, and graduate student Brett Gonzalez of Trabuco Canyon, Calif., examined three "blue holes" in the Bahamas and found that layers of bacterial microbes exists in all three, but each cave had specialized forms of such life and at different depths, suggesting that microbial life in such caves is continually adapting to changes in available light, water chemistry and food sources.

Their work, also done in conjunction with researchers from Penn State University, has been published in Hydrobiologia. Read More