Share 'Dolphin rescue caught on underwater camera'
An underwater camera has captured the moment a dolphin that became entangled in a fishing line was freed by a diver.
Martina Wing, who filmed the footage, said that the dolphin seemed to "communicate" with the diver to ask for help.
Speaking to BBC Breakfast's Jon Kay and Louise Minchin from Hawaii, she described the experience as "mind-blowing".
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