A dolphin in the Bahamas retrieved a dancer's phone from the sea bed on September 18 and the video showing it has gone viral.
Miami HEAT basketball team's Teressa Cee was on a dolphin encounter trip just off the island of New Providence when her phone fell into the sea.
A dolphin called Cacique picked it up and gave it back.
"Don't bring your phone to a dolphin encounter," Cee told the camera.
Cee was in the Bahamas as part of a HEAT dancer poster photo shoot.
The video has been viewed more than 2.5 million times since being posted online on September 21.