Dolphin prosthetic tail fin

We occasionally get to write about stuff that's been made to look like a dolphin, but we hardly ever get to talk about stuff actually made for dolphins, like this artificial fin that Bridgestone (yes, the Bridgestone that sells tires) created for a dolphin in Japan that had lost 75% of its tail from some mysterious disease. You'd think that Fuji, the dolphin they made the prosthetic tail fin for, would be grateful, but apparently she rejected it at first (it took her five months to get used to it), and even now they only keep it for 20 minutes day because, and we're not making this up, they're worried that it might fall off and that other dolphins would eat it.