A bottlenose dolphin called Bodie has died at the Dolphinaris marine park in Scottsdale, Arizona, barely a year after the controversial park opened.
A statement from the park said that the dolphin was suffering from a rare muscle disease.
The proposal to establish the desert-based swim-with facility was widely condemned by WDC and others. The owners also have several other captive facilities in Mexico.
Find out more about why swimming with dolphins should be avoided.