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 the Sea Grant Institute, University of Wisconsin with grants from the Office of Outreach Development UW-Madison in cooperation with UW-Extension
produced by Howard Hall Productions ; presenter: Devillier Donegan enterprises and Docstar ; Co-producer/Director: Howard Hall ; Co-producer: Michele Hall
a video production of the Bureau of Communication & Education, Wisconsin Dept. of Natural Resources ; producer/videographer, Jeff Soellner ; scriptwriter, Mark Kolter
Alaska Department of Fish and Game and University of Alaska Sea Grant Marine Advisory Program ; produced, directed, written by Deborah Mercy, John Hyde
a Swynk production in coproduction with NOB Broadcasting Service Corporation ... [and others] ; series director, Peter Swanson ; series producer, Joost van Loon ; writers, Bob Field, Katherine Duetch Tatlock
a Swynk production in coproduction with NOB Broadcasting Service Corporation ; TVE S.A. ; NCRV ; CPTV Connecticut ; executive producers: John Wegenk and Peter Gersen ; series producer, Joost van Loon
a Swynk production in coproduction with NOB Broadcasting Service Corporation ... [and others] ; series director, Peter Swanson ; series producer, Joost van Loon ; writers, Bob Field, Katherine Duetch Tatlock