China used to have pink river dolphins. Then the rivers became too polluted and they went extinct, very recently. But hey, we have to get our cheap sh!t from somewhere, don’t we?
There are freshwater dolphins in the Mekong in Cambodia:
https://www.wwf.org.kh/projects_and_reports2/mekong_dolphins/
They’re super cute, too!
Actually come to think of it I do remember something about pink freshwater dolphins. And I just saw a YouTube video about whales venturing inland in Washington state. I knew some ocean fish could handle brackish waters, but was surprised to hear some could survive in freshwater too. I haven’t fished since I was a kid so I’m not really up on these things.