In June 2013, National Geographic reported on a rare video, taken near the Gulf of Mexico in 2011, of a swimming giant oarfish in the deep. Not much is known about the oarfish's conservation ...

In this stretch of river, about 100 miles long, up to 200 billion fish are spawned every year, helping to make the 2,700-mile-long Mekong one of the most fish-rich rivers on the planet.

For his project, which was supported by the National Geographic Society, Hogan identified more than two dozen species under the term “megafishes,” freshwater fish that could grow at least six ...

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Paleontologists have uncovered in Arizona a Triassic treasure trove of fossils dating back 209 million years ago.