3. Guadalupe Island, Mexico
The margaritas aren’t the only things with serious power in these parts; great whites regularly snap massive tuna off sport fishermen’s lines. Plus, the waters around this mountainous island, about 220mi from San Diego, are known for having very reliable sightings, and the crystal-clear Pacific ensures you’ll be able to see those rows of saw-like teeth up to 100ft away. For an encounter with a 15ft great white named Shredder with a “well-known cage diver curiosity” (translation: he’ll be a fixture in your nightmares for the foreseeable future), check out longtime tour operator Shark Diver.
Thinking of wussing out? Don’t count on hitting on any bikini-clad hotties on deck. A new breed of bad-ass women, says Shark Diver founder Patric Douglas, are increasingly active -- and fearless -– participants, not just casual observers, and they will be more than happy to shame you.