The Waikiki Aquarium has a nice animal cam where you can see Black Tipped Sharks as well as Jacks, Rays, Snappers and Groupers. The sharks are fed three days a week - on Tuesdays, Thursdays and Saturdays, so check back often and perhaps you’ll see a feeding frenzy! The web cam image updates approximately every three seconds.
Watch the Black Tip Shark Cam