A possible concise summary is:
The video is about a hypothetical fight between Megalodon and mosasaurus, two prehistoric marine predators that never met in real life. The video compares their size, strength, speed, attack, and defense, and tries to imagine how the fight would unfold. The video concludes that Megalodon would probably win, but not without getting injured. The video also promotes a new book from the channel and asks the viewers to subscribe and comment.
Here are some possible facts extracted from the text:
1. Megalodon and mosasaur were two prehistoric marine predators that never met in real life.
2. Megalodon was a giant shark that could reach 18 meters in length and had a bite force of 18.5 tons.
3. Mosasaur was a reptile that could reach 18 meters in length and had a bite force of 8 to 9 tons.
4. Megalodon had thick skin, sharp teeth and a surprise attack strategy similar to white sharks.
5. Mosasaur had a long tail, flexible jaw and sharp teeth that could pierce anything.
6. Mosasaur had to surface to breathe, which could make it vulnerable to Megalodon's attack.
7. The video is a hypothetical simulation of what a fight between Megalodon and mosasaur would be like, based on their characteristics and behaviors.