Barbie - Magical Dolphin - DVD

Join Barbie and her sisters Skipper, Stacie and Chelsea for an adventure on a tropical island where Ken is on a science internship. While diving, the girls come across a young dolphin trapped in a cage - but it's no ordinary dolphin, it's a rare bright green magical dolphin!
When Barbie meets the mysterious Isla, who turns out to be a mermaid, together they soon discover that the dolphin is being held captive by a biologist named Marlo, for whom Ken works. Marlo intends to use the dolphin's unique qualities to enrich himself. So they must all join forces to free the dolphin so he can be reunited with his loved ones before it's too late.