Each winter, pregnant bull sharks arrive in Playa del Carmen.

Human-made noises in the ocean environment can hurt whales and other marine life. Here's why it's a problem and what we can do about it.

Our new column explores marine life behavior to look for on dives—starting with largemouth bass hunting.

Experts warn that unregulated swimming with orcas, or killer whales, in Baja California Sur is disturbing the animals.

Even sea life needs a siesta. See what this means about the evolution of sleep.

The landmark international agreement seeks to halt biodiversity loss and marine degradation for over half the planet. Here's what it means for divers, oceans and economies.

Chance encounters underwater with whales are rare—but they're a lot more likely to happen at one of these incredible spots.