You ever think about how there are little fish, and big fish, and big marine mammals, but no little marine mammals? Turns out there's a reason for that, and it's all about metabolism. Hosted by: Hank Green (he/him) Jesslyn Shields : Writer Angela Reed: Fact Checker Amy Peterson: Script Editor Faith Evelyn Schmidt: Videographer Savannah Geary: Script Supervisor, Editor, Associate Producer Daniel Comiskey: Editorial Director Sarah Suta: Producer Nicole Sweeney: Executive Producer Hank Green: Executive Producer Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5910812/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5910879/ https://www.science.org/content/article/sea-mammals-are-huge-reason#:~:text=The%20scientists%20think%20this%20is%20because%20it%27s%20too,replace%20the%20heat%20they%20lose%20to%20the%20water. https://www.sciencedaily.com/releases/2018/03/180326152405.htm Previous episode: https://youtu.be/UwlWKQJxEmE Image Sources: https://www.gettyimages.com/detail/photo/amphiprioninae-clown-fish-royalty-free-image/861712360?phrase=clownfish&adppopup=true https://www.gettyimages.com/detail/photo/dolphin-royalty-free-image/539271385?phrase=dolphin&adppopup=true https://www.gettyimages.com/detail/video/group-of-young-dolphins-frolic-under-surface-in-blue-stock-footage/1224357243?adppopup=true https://www.gettyimages.com/detail/video/pod-of-bottlenose-dolphins-surfing-the-waves-underwater-stock-footage/1453739044?adppopup=true https://www.gettyimages.com/detail/video/dolphin-selfie-curious-dolphin-swimming-close-to-the-stock-footage/1412482268?adppopup=true https://www.gettyimages.com/detail/video/whale-baleen-humpback-whale-cetacean-stock-footage/461262312?adppopup=true https://www.gettyimages.com/detail/video/aerial-view-of-mother-and-baby-humpback-whales-swimming-stock-footage/1438678277?adppopup=true