You might think the most dangerous thing that can happen at a beach is a shark attack, or that the scariest thing might be a tsunami - but instead, rip currents kill more beachgoers than all other causes combined.

Squeaks and Jessi are learning all about the animals that live at the bottom of the world, including penguins - emperor penguins, macaroni penguins, and more! We learn why penguins look like they're all dressed up, and what kind of food...

Antarctica is the coldest place on Earth, but there's still a lot to explore, on land and under the waves!

In the millions of years since oxygen began saturating Earth’s oceans and atmosphere, most organisms have evolved to rely on this gas. However, there are some places where oxygen-averse microorganisms like those from Earth’s earliest...

Many of the greatest biological dispersal events in history likely happened because animals inadvertently traveled across the oceans on floating debris.

For thousands of years, sailors have been telling stories of a mysterious phenomenon called dead water. Even after scientists figured out why it happens, it still affects swimmers today.

6 Surprising Blood-Drinking Animals

This weird-looking creature has been mistaken for a lot of things, including a whale placenta and a sea monster as well as a garbage bag. And less often, it’s recognized for what it is: a jellyfish!

Lizards tend to scurry around in short bursts rather than running long distances, and the reason why might be nearly as old as life on land. Hosted by: Stefan Chin

You probably don't consider algae to be super aggressive, but 66 million years ago had to turn to murder in order to survive.

As Squeaks continues to prepare for his big trip with Jessi, Mr. Brown helps him learn all about different kinds of wings and how they help animals and machines fly!

Squeaks is so excited to learn all about ancient sea monsters, like the plesiosaurs and mosasaurs! We'll also take a look at a fish wearing armor and the biggest shark to ever live - Megalodon!

A new drug reduces the risk of heart attacks by 40%. Shark attacks are up by a factor of two. Drinking a liter of soda per day doubles your chance of developing cancer. These are all examples of a common way risk is presented in news...

BJ Kirschhoffer from Polar Bears International discusses polar bear behavior and Jessi from Animal Wonders brings on an animal that lives near polar bears, an arctic fox!

You might think that fish ride the undercurrents with all their buds to avoid the hungry mouths of predators - safety in numbers, right? But, it turns out, there’s more to consider when asking why fish swim in schools.

For most of the year, the Gulf of Mexico is teeming with marine life, from tiny crustaceans to massive whales. But every summer, disaster strikes. Around May, animals begin to flee the area. And soon, creatures that can't swim or can't...

There’s a lot we just don’t know about death, but even among the things we think we do know, there are a lot of misconceptions. Here are 5 weird things we believe about death!

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Why are some athletes able to crush world records when other records remain unbroken for years? The answer has to do with the kind of materials used in the competition and the type of athletic event one is competing in. Hank Green...

Dive into the deep with open water swimmer Bhakti Sharma, as she shares what she learned about resilience during her personal journey from the scorching heat of Rajasthan, India to the bone-chilling waters of her record-breaking swim in...

Why would a fish throw up its stomach? What makes a scuba diver develop painful microbubbles in their joints? Neosha S Kashef details the basics of barotrauma, shedding light on how humans and fish alike are influenced by laws of physics...

Most fish are pretty sluggish in the cold. But the Pacific bluefin tuna is one of the fastest apex predators in the frigid Pacific ocean. Their physiology has adapted to help them retain more of the heat their bodies produce, except when...

Today, penguins are found mainly in the Southern Hemisphere. But fossils have revealed giant lookalikes to these swimming birds further up north, spurring questions of how they evolved and what happened to them.

Jessi and Squeaks are on a beach vacation, so they've called in their pal, Dr. Lawrence Turtleman, to take over the show for today! And what is he going to teach you about? Turtles, of course!

Every year, tiny shrimp do something strange on the banks of a river in Thailand: they get out of the water and walk on the land! Why do they take this risky path?