A marine biologist uses Maps to explore under the sea

Just under the water lies one of the biggest mysteries of the Great Barrier Reef: blue holes. These underwater sinkholes give researchers a rare look at ocean life and how we can protect it. Until a few years ago, only two blue holes were documented in the entirety of the Great Barrier Reef — they are hard to find and even harder to get to. With the help of Google Maps, marine biologist Johnny Gaskell and a team of researchers are finding previously unknown blue holes. In 2017, after