La Jolla Underwater Park
La Jolla, California
Seek out a spotted fish called leopard shark, a shockingly bright orange one called garibaldi, and leathery, squishy sea cucumbers. Tombstones? That’s what they call memorial markers for past adventurers and fisherfolk who lost their lives in these waters. The finds are all part of La Jolla Underwater Park, a 6,000-acre expanse of ocean and tidelands. On your own or with a tour, you can snorkel, or even dive, amid canyons, caves, and artificial reefs just beyond San Diego. You might even spot sea lions, kelp beds, or sea turtles.