“The relentless exposure to UV radiation is not normal for them,” Rose said. “Desert sun is particularly harsh. These tanks have no shade and they are very shallow, meaning the water itself does not filter out much of the UV radiation, even when the dolphins are below the surface.”
“It is not normal or natural for dolphins to be exposed to UV radiation in this way,” Rose added. “Where they are found in tropical climes, or even off the coast of desert areas, they can ... spend more than 70 percent of their time at depths where the worst of sunlight is filtered out.”
The dolphins at Dolphinaris Arizona, however, only have 10 feet of water to swim in, which doesn’t allow them to escape the sun, Rose explained.