Rescue saves 30 dolphins on Rio de Janeiro coast Amateur footage has been released showing 30 stranded dolphins being saved by beachgoers on the Rio de Janeiro coast. In the video, local people and tourists in Arraial do Cabo, in Rio de Janeiro state, are seen helping the pod swim back out to sea after they got caught in the area's strong current. It has become an internet hit with more than eight-hundred thousand views since being published on March 5. Dozens of helpers cheered after all 30 struggling mammals were dragged by their tails back into deeper water. According to reports a joint Brazilian and American team of biologists are now researching what caused the dolphins to get stranded.