Cameras captured the moment marine researcher Ocean Ramsey (inset) was about to dive into murky, shark infested waters on Wednesday in the island of Oahu after spotting a shark bumping into plastic pollution. Just as she's ready to drop in, the diver takes one last look into the choppy waters and is greeted by Queen Nikki, a prominent tiger shark in the area. Ramsey quickly pulls herself back on the boat as Nikki pops out of the water (left), attempting to take a bite of the researcher's flippers. Rather than be startled, Ramsey laughs off the incident, quickly identifying the shark by name and continuing her dive to locate two other large, female sharks in the water. Ramsey has described Nikki as her favorite tiger shark in Hawaii, with the researcher previously petting the apex predator on the nose (right).