Catalina Fun Tours, Newport Beach

Scenic boat rides to and from Catalina Island pass by stunning vistas of Long Beach Harbor and gamboling dolphin families—but the boat trips' main attraction is the island itself. The clear waves that lap at its shores are ideal for kayaking, scuba diving, or doing an emergency load of laundry. Meanwhile, mainland attractions range from art galleries and shops to winding hiking trails. Armed with a round trip boat ticket, visitors from four mainland California ports can explore the island for anywhere from a few hours to a few weeks.