Visiting Southern California’s archipelago takes planning and an adventurous spirit, but it’s worth the effort.

The 40-foot sea arch rock just offshore serves as both the symbol of the park and a guidepost on approach to East Anacapa. Visitors ferried by Island Packers Cruises, the concessionaire in charge ...

In between snorkeling and sunning, you can stretch your legs on a walk toward Cala Santanyi, where you'll be rewarded with a view of Es Pontas, a natural arch rock outcropping that resembles a bridge.