Darryl Grimason was so fascinated with the undersea world, he learned how to dive and record footage underwater so that he would be able to present this documentary. Waterworld focuses on exploring and documenting the waters around the United Kingdom, as there are many oceanic life forms and sunken ships that people may never even be aware of. Each installment in this documentary provides some new revelation, so keep an eye out for the next episode, as you might just learn something.