The underwater world is like experiencing another world on the same planet.
https://www.cnn.com/videos/world/2021/04/23/james-cameron-whale-narwhal-amanpour-sot-vpx.cnn
https://www.bananaip.com/ip-news-center/james-cameron-revolution-underwater-cinematography/
Abyss's Underwater Aliens - Explored - Underrated James Cameron Spectacle - A Technological Marvel! https://www.youtube.com/watch?v=FfQqGCEX4Bg
Sci-Fi Short Film: "Oceanus" by DUST https://www.youtube.com/watch?v=V6_9YnTDR-s