It said: "The Franciscana, like other species, cannot remain for much time outside of the water.
"It has thick fatty skin which gives it heat and means that taking it out of the water rapidly causes it to dehydrate and die.
"This occasion serves to inform the public about the urgent necessity to return these dolphins to the sea as soon as possible if they find them on the shore.
"It is fundamental that people help to rescue these animals, because every Franciscana counts now."
