"suicide dolphins": not trained marine mammals, but highly advanced, biomimetic Unmanned Underwater Vehicles (UUVs) https://www.linkedin.com/pulse/truth-irans-suicide-dolphins-reto-zogg-az0pe
https://en.wikipedia.org/wiki/Military_marine_mammal#Dolphins
https://en.wikipedia.org/wiki/The_Day_of_the_Dolphin , https://www.rogerebert.com/reviews/the-day-of-the-dolphin-1973
https://www.zerohedge.com/political/be-very-afraid-hantavirus-and-suicide-dolphins
https://www.adolphinpod.com/blog/the-evidence-for-dolphin-suicide
https://www.theguardian.com/environment/2008/jun/12/wildlife.conservation
Of course Ebola, dolphins and even monsters from outer space can all be thrown into the mix, or projected out there to unsettle the MA$$E$.
https://thedigitallabyrinth.blogspot.com/search?q=Hantavirus
"Social media users are claiming that the Iranian military has unveiled a new type of kamikaze underwater drone shaped like a dolphin. However, the photos circulating as evidence have been generated by AI." https://www.france24.com/en/middle-east/20260512-images-iran-unveiled-kamikaze-dolphin-drones-debunked
The AI Dolphin
https://taras.org/campaigns/drones-and-dolphins "We are developing a process combining drone technology with artificial intelligence to provide us with a fast monitoring and identification system."