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David Shiffman, Ph.D.

Dr. David Shiffman is a marine conservation biologist who studies threatened sharks and how to protect them.

How Intelligent Are Octopuses? Your Octopus Questions, Answered.

Here’s how many brains and arms octopuses have, how long they live, what octopuses are, and more.

Can Trawling be Sustainable?

The impact this style of fishing has on the ocean depends greatly on what seafloor environment is subjected to the tactic.

Do Any Ocean Animals Get Sunburns?

Sealife has been known to get sunburnt, but animals have their own ways to avoid skin damage during a life outdoors.

What’s It Like to Be a Marine Biologist? How Do You Become One?

A marine biologist shares what degrees it takes to break into the field, where they work (it’s not always in the ocean!), how much you can make as a marine biologist and more.

Are All Sharks Scavengers?

Scavengers eat animals that are already dead instead of hunting live prey. It's extremely important to keep ecosystems clean and healthy.

What is the Biggest Threat to Sharks in the Next Decade? What Can We Do to Stop it?

Overfishing (not finning) is far and away the biggest threat to sharks globally, but banning shark fishing is overkill itself. There are middle ground solutions.

What Causes a Jellyfish Bloom?

While these natural population peaks can cause harm and human interference can exacerbate them, there’s no reason to find them terribly alarming.

Are Manta Ray Night Dives Ethical?

How manta ray encounters are structured shapes their impact on wildlife.

How Often is New Life Discovered in the Ocean?

Hundreds of new ocean species described by scientists every year—but described doesn't mean newly discovered.