@DoctorAllcome
Well, not all dolphin swimming places are bad.
I have swum with dolphins but it was at a dolphin rescue place. Numerous dolphins get injured by jet skis, boats, fishing industry and these ones are rescued and nursed back to health before being released back into the wild. We donated to it and so were invited to come in and see the dolphins there were nursing.
I just looked at the link you posted because it sounded a bit unlikely a rescue centre would let the public swim with animals who are being rehabilitated.
I didn't get much further than the Meet Our Dolphins page:
www.dpmmr.org/meet-our-dolphins
First dolphin up:
Alfonz, an adult male Atlantic bottlenose dolphin, was one of the first dolphins born at DPMMR on July 25, 1993. He inherited his pink belly from his father, Fonzie, a trait he continues to pass on to his own sons, Tug and Jett.
That's a hell of a long rehab if he was born there in 1993. Tug & Jett are also part of the resident dolphins.
I'm not doubting they do rescue and conservation work but don't kid yourself that excuses swimming with captive dolphins -- especially ones bred in captivity.
Seriously - watch Blackfish. Everyone should watch it.