A striped dolphin with thumb-like flippers was spotted in the Gulf of Corinth in Greece by researchers with the Pelagos Cetacean Research Institute.

A killer dolphin is on the loose in British waters after it slayed one of its own kind - and then a shark. The bottlenose dolphin, which has been nicknamed Jack the Flipper, was caught on camera ...

A deadly dolphin who has been branded "Jack the Flipper" is prowling UK waters after killing one of its own kind. Sarah Michelle Wyer, who works for Dolphin Spotting Boat Trips, was left stunned ...

A killer dolphin is terrorising the waters off the coast of Cardigan Bay, in a phenomenon that has stunned marine experts and wildlife watchers. The mammal, eerily nicknamed "Jack the Flipper ...