200 million-year-old eel species found
A newly discovered species of eel that lives in a cave under the sea has been around since dinosaurs started dominating the planet.
It's got primitive features that are really different from other eels, and researchers have described it as a 'living fossil'.
They say the eel started evolving a massive 200 million years ago.
Even its cave home is between 60 and 70 million years old.
Video courtesy of Jiro Sakaue, Southern Marine Laboratory, Palau.
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