In this installment of Ask a Marine Biologist, Dr. David Shiffman tackles a frequently asked question about sharks.

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Why are bad shark movies such as Sharknado and Sharktopus so popular? Shark expert David Shiffman explains why and how it effects the public's understanding of sharks and conservation.

With plot holes galore, the scuba diving thriller 47 Meters Down: Uncaged gets the science behind scuba diving and sharks woefully wrong.

Learn how to identify key coral species like the *Mycedium Elephantotus* coral, more commonly known as elephant nose coral.

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What it's like to swim with orcas—or killer whales—in Norway's Troms region aboard *Sula* liveaboard.