Kind of a crazy true story they've had 2 common dolphins wash up dead with high viral loads of bird flu in their brains, a couple of sealions, and a fox also have died from it. They suspect the dolphins get it while feeding on baitfish schools because birds come down and grab the same bait, those feeding frenzies we all saw on Blue Planet. Those birds are now in many cases carrying bird flu and it's so contagious they are infecting dolphins and sealions.