Diving Downtown: In this artsy tourist enclave, you're never more than a few blocks from great shore diving.

When you dive with sea lion pups off California's Santa Barbara Island, you've got to share your toys.

Deepwater Blues (Pacific blue sharks)

Reservations Required

Once bordering on extinction, California's black sea bass are staging a big comeback.

California's HMCS Yukon turns San Diego's Wreck Alley into a must-see destination.