They pass through the Suez Canal - They come because the sea temperature is rising and the number of sea turtles, their main predator, is decreasing - See photos
new species
They are found exclusively on the islands of Skyros and Andros
It was found in what is now the northern Patagonia region of Argentina
Head scientist says it looks artificial
However, 2017 wasn't just a year for discovering new creatures, it was a time for finding ones we thought we'd lost forever