A giant, 50,000-pound humpback whale protected a marine biologist from a nearby shark by shielding her and pushing her out of harm's way… and it was caught on video. The incident took place off the coast of Cook Islands in the South Pacific. The whale biologist says the humpback protected her and her team from a circling tiger shark by putting her under its fin and using his head and mouth to push her away. She says the incident is proof of whale's intuitive nature to protect other species of animal including humans, something she believes has never been captured on film.