Dive a wall and you’ll know anything can happen. In fact, the deeper the wall plunges, the greater the odds of swimming with the unexpected — from sharks to any number of pelagics.

Shark Angels founder and shark activist Julie Andersen shares why you should do as she says — and not as she has done.

Hard to spot and even harder to look away from, creatures like the tasseled anglerfish, stargazer, red-lipped batfish and reef stonefish are among the most unsightly species in the underwater world.

Of the nearly 700 photos submitted in this year's Photo Contest, Scuba Diving received some great egg shots. See what our readers caught on film!

Jellyfish are the farmers, not the farmed, at this hidden Indonesian lagoon.

Rick MacPherson, conservation programs director for the Coral Reef Alliance, has built a global team of local conservation leaders in everywhere CORAL works.

A new documentary explores the tragic legacy of killer whale training.

Slowly but surely, humans are coming together to protect sharks all across the globe.

In underwater photography, it can be a challenge to get the correct exposure on transparent animals, such as this hooded nudibranch in British Columbia; see how David Hall made it happen.