diving Building the world's biggest and deepest swimming pool… for science! David Pescovitz

ocean biology Explorers revisit a whale carcass one year later Andrea James

microbes Scientists revive 100-million-year-old microbes buried in the ocean floor David Pescovitz

fabien cousteau Fabien Cousteau unveils design for undersea "space station" Andrea James

mapping Scientists have mapped 20 percent of the ocean floor David Pescovitz

Great Barrier Reef How do you count more than 60,000 sea turtles? David Pescovitz

Island of Secrets Mermaid or beluga whale? David Pescovitz

there be dragons See a fantastically strange red seadragon on video for the first time David Pescovitz

#MIRAGEcruise The mystery of our 12-hour delay: the Mirage Expedition Ben Marks

#MIRAGEcruise Investigating the Great Earthquake of 2012: the Mirage Expedition Ben Marks

mariana trench Scientists view never-before-seen glowing jellyfish in Mariana Trench ocean depths Xeni Jardin

ROVs Rare ocean encounter between sperm whale and remotely operated vehicle caught on video Xeni Jardin

sea Sean and the Sea Lion: a pinniped story in photographs Xeni Jardin

Alvin Inside Alvin: Scientists as Makers Maggie Koerth