Article

Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows

In the seagrass beds and kelp forests of the Oligocene-Miocene transition, nearly...

When Did Today’s Whales Get So Big?

More recently than you might think, say scientists who scoured the fossil...

slideshow

A Squalodontid Success

On a beach in Piña, Panama the tide is rolling out. Faint outlines of skeletal...

Article

Keeping An Ear Out For Whale Evolution

Large whales are notoriously hard to study. Except when rising to breathe, they...

Article

The Whale Graveyard Whodunit

One of the ocean's tiniest organisms often does the most harm. Microscopic algae...

Personal Perspectives

The Discovery of Multispecies Communities of Seacows

Sirenians, or seacows, are a group of marine mammals that include manatees and...

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Dugong Feeding

Dugongs, along with manatees, make up a group of marine mammals called sirenians or...

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Harp Seal, Prince Edward Island National Park, Canada

Harp seals are protected in the United States by the Marine Mammal Protection Act....

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Multispecies Communities of Seacows

Sirenians, or seacows, are a group of marine mammals that include manatees and...

Article

What the Megalodon Left Behind

The largest shark ever to exist on this planet, Carcharocles megalodon, could grow...

Lesson Plan

What is El Nino?

This activity explores the potential for climate variability and change to trigger...

Article

In the Arctic, the Times, They Are a-Changin: You Can Pitch in to Understand How

Invasive species are often in the news these days, with human-transported organisms...