While not a dinosaur, this mosasaur swam alongside the dinosaurs in the open ocean millions of years ago...

Reference image: Getty Images (https://www.gettyimages.com/detail/news-photo/director-of-museum-of-comparative-zoology-dr-alfred-s-romer-news-photo/50403005?adppopup=true) and color scheme borrowed from the blue tree monitor lizard (a distant relative!).

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