Today's oceans are full of fish with fins that couldn't evolve into limbs like ours. So, who are our ancestors and where did they go?

Today, all mammals from humans to bats have five fingers or fewer. Yes, even whales, whose finger bones are hidden in their fins. Birds have four or fewer and amphibians get the best of both worlds, often having four digits on their...

Around the time that some of our fishapod relatives were crawling out of the water, others were turning around and diving right back in.

Roller coasters give people the opportunity to experience physics in dramatic ways. In this episode of SciShow, we break down how physics work on roller coasters to give you the ride of your life!

Is there a chance that more species may actually be closer to fish than we originally thought?

Like dolphins, manatees, and other marine mammals, whales have nipples hidden in surprising places.

In 1947, explorers noticed a strange phenomenon while crossing the Pacific Ocean. Somehow, small squid known to live deep beneath the waves kept appearing on the roof of their boat. The crew was mystified— until they saw the squids...

This week, scientists discover something in a fish fossil that might give us a hand in finding our earliest land-dwelling ancestors.

Box-shaped fish might seem like they don't have the most efficient body shape, but there are some surprising perks to being an underwater cuboid creature.

The coelacanth, a prehistoric fish that was mistakenly thought to have gone extinct at the same time as the dinosaurs, has managed to stick around our seas for 360 million years. Erin Eastwood details the surprising "back from the dead"...

Cartoonist Jim Toomey created the comic strip Sherman's Lagoon, a wry look at underwater life starring Sherman the talking shark. As he sketches some of his favorite sea creatures live onstage, Toomey shares his love of the ocean and the...

Designer Ivan Poupyrev wants to integrate technology into everyday objects to make them more useful and fun -- like a jacket you can use to answer phone calls or a houseplant you can play like a keyboard. In a talk and tech demo, he lays...

Today's oceans are full of fish with fins that couldn't evolve into limbs like ours. So, who are our ancestors and where did they go?

We may never know when our ancestors walked out of the water into dry land. But it's possible they may have been walking in water for millions of years!

In tropical seas, flying fish leap out of the water, gliding for up to 200 meters, before dipping back into the sea. In the Indo-Pacific, a hunting sailfish swims up to 110 kilometers per hour. These feats are made possible by a fish's...

The human hand, with its multi-talented thumb, might be man's greatest tool. But did you know we can trace that thumb, and the hand and arm it's connected to, all the way back to a 375 million-year-old fish named Tiktaalik? This week I...

Today we’re going to explain how exchangers...exchange heat. We’ll look at concentric tubes, finned tubes, plate heat exchangers, and shell-and-tube heat exchangers. And we’ll look at some equations to help us sort through heat transfer...

Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: you're a mammalian amniotic tetrapodal...

Howcast - Learn how to do the seal Pilates Mat exercise from Core Pilates NYC instructor Sarah Ruback in this Howcast workout video.

Howcast - Learn how to make a fondant shark for a beach theme cake from Angela Cuervo, winner of Food Network's Sweet Genius, in this Howcast video.

Howcast - Learn how to make a fondant dolphin for a beach theme cake from Angela Cuervo, winner of Food Network's Sweet Genius, in this Howcast video.

Howcast - Learn how to make a fondant turtle from pastry chef Angela Cuervo, winner of Food Network's Sweet Genius, in this Howcast video.

Howcast - If you want a better look at what's underwater, all you have to do is snorkel.

If you feel like a fish out of water in the kitchen, this guide will have you slicing and dicing like a professional chef in no time.