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

This archipelago, north of Seattle in the Salish sea, is packed with so much lush life, you'll feel as though transported to ...

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

Discover the treasures found in these Hawaiian islands, including monk seals, sea turtles and underwater caverns, with the ...

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

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