This yacht built for divers offers a boutique experience and fascinating itinerary in the northeastern Caribbean.

These three destinations are top-notch for underwater natural wonders, according to our readers. Find out where to go for the ...

In this edition of “Ask A Marine Biologist,” Dr. David Shiffman answers a popular question about our beloved apex predators of the sea.

My history with these islands in Washington’s Salish Sea goes way back to those halcyon days living rough out of my truck. My formative years—one remarkable diving-camping-whale-watching expedition ...

Split-shots let you simultaneously show off what's going on both above and below the surface. Here's how to nail the ...