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

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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.

In this edition of Ask a Marine Biologist, Dr. David Shiffman discusses the swimming abilities of fish.

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.