In this edition of Ask a Marine Biologist, Dr. David Shif David Shiffmanfman tackles a question about a deep-sea shark’s unusual anatomy.

Youth Diving With a Purpose is a scuba diving program that teaches young divers to learn underwater surveying and discover the history of slave ships and more.

Sea Experience

How do you survive an uncontrolled ascent? Here's how to deal with runaway BC inflation, and how to keep from getting decompression sickness, or the bends.

You surface after scuba diving and the dive boat is nowhere to be found. Do you know what to do if you're left at sea?

Knowing how to ditch your weights while scuba diving is a matter of life or death — here are the tips that will save your life.

Be prepared for any situation while scuba diving: Here's how to make an emergency ascent.

Do you know what to do when you run out of air underwater? Here's how to handle a scuba diving emergency so you're prepared for your next dive.

How do you avoid getting the bends? Here are eight tips to keep you from getting decompression sickness (DCS) during a dive.