In this edition of Ask a Marine Biologist, Dr. David Shiffman answers a question from a reader.

The research behind one of the most fascinating mechanisms in the animal kingdom.

Activists believe there are only about nine vaquita left in the world, meaning this rare porpoise is likely close to extinction.

Tips from pro dive guides on how to find small fish and marine critters on the reef while scuba diving.

The most Critically Endangered shark species are largely unknown. These fascinating facts illustrate why they should get more attention and earn protection.

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.