A first look at Michigan's Grand Traverse Bay Underwater Preserve.

The best destinations, dives and deals.

Dive Log: Secret spots & must-see dive classics.

Dive Log: Secret spots & must-see dive classics.

Mile-high tropical diving in the Rocky Mountains?

World's first manta ray protected area.

Underwater mazes, clear, rushing fresh water and natural light shows feed the urge to submerge.

Newly discovered reefs expand.