A 14-foot giant mako shark is spotted in the waters of Portugal's Azores region. Underwater cinematographer Joe Romeiro and his marine biologist wife, Lauren, search the teeming depths around the ancient islands to capture the beast on film.

The remote islands off the Eyre Peninsula in South Australia are believed to harbor some of the biggest white sharks on the planet. While local fishing reports suggest these giant sharks are still around, they are rarely seen.

One of last year's most popular Shark Week shows returns. Marine biologist Dr. Austin Gallagher, marine scientist Liv Dixon, and legendary cameraman Kina Scollay travel to a new location and head back into the belly of a 29-foot whale decoy with new shark attractant features to create the biggest feeding frenzy ever with 18-foot 'Breeder' sharks in New Zealand.