Who is the girl in YELLOW bikini IN THE opening credits of Hawaii five o?

The girl in the yellow bikini in the opening credits of Hawaii Five-0 is model Amanda Booth. She was originally set to be only a stand-in for the actress playing Lt. Catherine Rollins (Michelle Borth), but the producers were impressed with her charisma that she remained as Cathy as a main character. Booth is of Hawaiian and Japanese heritage.