South African great whites are on the brink of extinction, but experts believe there is at least one breeder shark left in the water surrounding Bird Island. A team will search and tag the last female great white mature enough to carry on the species.

Shark researchers travel to Andros Island in The Bahamas to determine if it's a new great hammerhead hotspot, and they're using reports of a half-octopus, half-shark creature known as the Lusca to help them locate massive sharks for their study.