u/Kirenia_Ayako

I am trying to find a dinosaur documentary I randomly remember every once in a while, but don't remember the name of. I only remember it for the main point of the blot which is a mosasaur (it could have been a tylosaurus or maybe even a basilosaurus) swims up from the ocean into the waterways of either a swamp or wetlands. I think there were little prehistoric monkeys up in the trees that had to cross the waterway but were scared of the mosasaur, and these hippo-like dinosaurs too if I'm remembering correctly, one which I think almost got eaten but got away. As far as I recall beyond the scenery, I think all the animals were CG (like prehistoric planet but I have been skimming through the series and can't find any episode like that)