Dolphins by Cass McCombs (originally by Fred Neil)
This is 100% a song I heard because Spotify put it on a playlist for me. It’s a cover by Cass McCombs, who has some records out, along with the Chapin Sisters.
Apparently the original author, Fred Neil, was huge in the NYC folk scene in the ’60s, so much so that you’ve heard his song Everybody’s Talkin’ as made famous by Harry Nilsson in Midnight Cowboy, and I should add that one to the list, but also… ALSO… he got into dolphins, met Ric O’Barry, and worked for animal rights (well, dolphins, at least) for decades after.
A little backup vocal and some sort of software electric piano on the choruses.