Adorable baby dolphin leaps for joy after boaters free it from a plastic bag A baby dolphin whose life was in danger after getting trapped up in a plastic bag appeared to thank his rescuers by doing a little dance. The tiny mammal was filmed by a group of fishermen thrashing about in the waters off the coast of Sao Paulo in Brazil. As they get closer, they notice the stricken animal is inside a green shopping bag. Life in danger: A baby dolphin is hauled out of the water by fishermen after being spotted thrashing about in the water while wrapped up in a plastic shopping bag They use a net to scoop him up and haul him into the boat then one of the men removes the bag as the agitated calf whips its tail around. The dolphin is then returned to the ocean near Fort Itapiu. But to the joy of all those on aboard, the dolphin suddenly flips out of the water and waggles back and forth in the upright position - a gesture interpreted by some as a way of saying thank you. Freedom in sight: The mammal is held by one of the fishermen before being returned to the waters off Brazil Flipping happy: To the joy of all those on aboard, the dolphin suddenly leaps out of the water and waggles back and forth in the upright position - a gesture interpreted by some as a way of saying thank you