a BBC Studios Natural History Unit production ; a co-production with BBC America, Tencent, WDR, France Televisions and CCTV9 ; a BBC Open University partnership ; executive producer, James Honeyborne ; series producer, Mark Brownlow ; producers, Miles Barton, Orla Doherty, Kathryn Jeffs, Will Ridgeon, John Ruthven, Jonathan Smith
produced by the Sea Grant Institute, University of Wisconsin with grants from the Office of Outreach Development UW-Madison in cooperation with UW-Extension
written & directed by Angela Sun ; producer, Tanya Leal Soto ; executive producer, Angela Sun ; a Plastic Paradise, LLC production ; Sunshine Films presents a film by Angela Sun
a WGBH production in association with the British Broadcasting Corporation for Nova ; written and presented by David McCullough ; produced and directed by Carl Charlson
produced by UW-Extension, Langlade County Land Records and Regulation Department, Vilas and Burnett County Land & Water Conservation Departments, Dragonfly Consulting
produced by NOAA Alaska Sea Grant College Program, Alaska Division of Homeland Security and Emergency Management, University of Alaska Fairbanks Geophysical Institute ; technical production by Moving Images ; writer, Kurt Byers ; produced by Maureen and Stuart Aull