Jurassic marine crocodiles, video

This 11 June 2020 video says about itself:

When Crocodiles Swam The Oceans

Crocodiles are good swimmers and often live near river mouths near the ocean and some of them even make brief excursions into the ocean. This means they are always at a tipping point of becoming marine animals. This is known because it has happened on several occasions throughout prehistory, but in the Jurassic, one group of crocs called the thalattosuchians would take this a step further in following whales and other marine reptiles in becoming fish-like.