由导演Yavar Abbas,Steven Clarke,Catrin Evans,Anna Jeffries,Christopher Riley,Adam Warner,Alex West,Chris Thorburn,Tomasz Cebula,Wayne Derrick执导，2021年上映的《海底大揭秘第四季》，是由凯瑞·莎勒等主演的记录片。 　　Combining undersea exploration with innovative visualizations, DRAIN THE OCEANS reveals hidden evidence of amazing undersea mysteries. 　　Not “artists impressions” but what is actually there — down to the very last rivet. And, for its fourth season, it embraces a gripping new style, telling stories purely through the words of explorers and archaeologists, putting viewers right by their side.