What is watch prehistoric planet online free?

As an AI language model, I don't have the ability to browse the web or provide direct information about websites that offer free streaming of movies or TV shows. However, I can tell you that it is illegal to watch copyrighted content for free without the proper licensing or permission from the owners.

That being said, the TV series Prehistoric Planet is a documentary style show that explores the history of the Earth during the prehistoric era. It was originally produced by BBC and aired in 2011. The show features computer-generated imagery (CGI) of prehistoric creatures and their environments, as well as interviews with experts in the field of paleontology. It has been praised for its accuracy and attention to detail in bringing prehistoric times to life.

If you're interested in watching Prehistoric Planet legally, you can check your local TV listings for any upcoming broadcasts or purchase the episodes or season online through various streaming platforms such as Amazon Prime, iTunes, and Google Play.