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Armed and Dangerous: Eat or be Eaten

Related Article: Learn more about fish.

Marine organisms have special adaptations to find food -- and to avoid becoming food themselves.
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Primary Consumers: Browsers

Primary Consumers: Browsers (0:24)

Most reef-dwelling fish are browsers, feeding on the algae that live in an intimate relationship with coral animals.

Threats to Biodiversity: Oceans Without Fish

Threats to Biodiversity: Oceans Without Fish (2:26)

With today’s technology, people catch fish faster than the fish can reproduce. This has led to over-fishing and a reduction in the overall numbers and species of fish.

American Shark: Greenland Shark Hits Sub

American Shark: Greenland Shark Hits Sub (2:54)

A submersible has a rare and exciting encounter with a Greenland shark, a little-seen giant of the deep.

American Shark: Great White Encounter

American Shark: Great White Encounter (2:38)

Discovery Channel's own soundman, Mike Kasic, describes his terrifying encounter with a great white shark.

American Shark: Surfer Recounts Shark Bite

American Shark: Surfer Recounts Shark Bite (1:54)

Daytona, Florida is often called the Shark Bite Capital of the World.

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Science of the Sea: Introduction to Fish

Science of the Sea: Introduction to Fish (0:40)

Take a look at the science behind the biology of fish in this brief introduction.

Science of the Sea: Introduction to Life Below

Science of the Sea: Introduction to Life Below (0:39)

Explore ocean life in this brief introduction to the undersea habitat.

Armed and Dangerous: Eat or be Eaten

Armed and Dangerous: Eat or be Eaten (0:49)

Marine organisms have special adaptations to find food -- and to avoid becoming food themselves.

Armed and Dangerous: Introduction

Armed and Dangerous: Introduction (0:39)

This video examines survival techniques employed by a variety of marine animals

Wild Kingdom: The White Warrior

Wild Kingdom: The White Warrior (1:10)

A great white shark displays brute strength on Wild Kingdom's "Way of the Warrior."

Up Close and Dangerous: Aggression versus Instinct

Up Close and Dangerous: Aggression versus Instinct (1:05)

Learn the difference between a shark attack and the technique of 'mouthing,' which sharks use to explore new objects in the underwater environment.

Up Close and Dangerous: Sharks: Savage Killers?

Up Close and Dangerous: Sharks: Savage Killers? (1:15)

Despite being portrayed as savage killing machines, sharks rarely attack humans. Watch this clip to find out why.

Kill of the Week: Airborne Monster

Kill of the Week: Airborne Monster (0:27)

In this Animal Planet Kill of the Week video, a Great White breaches the surface to catch and consume a fleeing seal.

Corwin's Quest: Salmon's Red Phase

Corwin's Quest: Salmon's Red Phase (1:47)

Animal Planet star Jeff Corwin stops a salmon during spawning season and details its new physical features, course upriver, and unavoidable end.

Threats to Biodiversity: Oceans Without Fish

Threats to Biodiversity: Oceans Without Fish (2:26)

With today’s technology, people catch fish faster than the fish can reproduce. This has led to over-fishing and a reduction in the overall numbers and species of fish.