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Ask a Marine Biologist Articles

Can Fish Survive in Both Fresh and Salt Water?

In this edition of “Ask a Marine Biologist,” Dr. David Shiffman discusses osmoregulation and whether fish can adapt to different environmental conditions

Sea Cucumbers: Everything There Is to Know

In this edition of “Ask a Marine Biologist,” Dr. David Shiffman discusses one of the ocean’s most likable echinoderm.

What Remains Unknown About the Deep Sea?

The latest "Ask a Marine Biologist" 

What Can Divers Do to Help With Ocean Plastic Pollution?

In this edition of “Ask a Marine Biologist,” Dr. David Shiffman shares what individuals can do to help fight the scourge of ocean pollution.

Tuna, Mercury and Bioaccumulation: Have Humans Made it Worse?

In this edition of “Ask a Marine Biologist,” Dr. David Shiffman explains the health reasons behind limiting how much apex predator you eat.

Does Flash Photography Hurt Marine Life?

Photographs of marine animals can educate and inspire. In this edition of “Ask a Marine Biologist,” Dr. David Shiffman discusses whether taking those photos hurt the animals.

How Common Are Stranded Sharks Like the Frozen One in Cape Cod?

In this edition of Ask a Marine Biologist, Dr. David Shiffman answers questions recently sparked by a frozen shark found in Cape Cod.

How Do Sea Turtles Breathe? Fun Facts You Should Know about Sea Turtles.

Here’s everything you should know about sea turtles, including how long they live, how fast they can swim and where they lay their eggs.

How Much of the Ocean Has Been Explored? 17 of Your Ocean Questions, Answered.

Marine biologist Dr. David Shiffman provides the ocean facts you want to know in this marine Q&A!