Tiger beach is a popular dive spot where tiger sharks and other shark species congregate. When there are many divers, guides use fish heads as bait, but usually everybody runs out of air within the first 45-60 minutes. I had plenty of air to spare, so I stayed by myself for another half hour. By then, most sharks had lost interest, but one kept coming back to check me out. There was no bait, just curiosity on both sides.