Hank combines two of his favorite things - talking to scientists and strange things washing up on the beach - to bring you the Mystery of the Giant Eyeball.

SciShow Quiz Show is back, with familiar faces Hank Green and Caitlin Hofmeister battling it out over questions on water, fire, and computer science!

Octopuses and other cephalopods can squirt ink when threatened, but the forms the ink takes can go way beyond your typical smokescreen.

We all know ducks quack, dogs bark, and birds chirp, but that barely scratches the surface of all the amazing ways animals have devised to talk to each other!

How whale poop becomes perfume.

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FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some...

Up in the air, it's a bird, it's a plane, it's... A SQUID!

We know more about some other planets than we do about the deepest corners of Earth's oceans, and the species we've found there are almost alien. Here's some of the most unbelievable oddities ever observed! Special thanks to the Monterey...

A SciShow Kids viewer wrote us and asked: How does soap work? Find out what really happens when you take a bath!

There are about 500 species of squid, and they live in all the world's oceans, making them a reliable food source for whales, dolphins, sharks, seabirds, fish - and even other squid. As a result, the squid's most extraordinary...

Humans often take inspiration from nature when coming up with inventions, and this includes breakthroughs in fabric design that help to forward the fabulous and functional world of fashion.

Changing colors -- it’s not just for chameleons! Many species of octopuses, squid and cuttlefish can do it, as well as a few insects, and even mammals and birds. Find out what feats of biology different animals use to change their...

Hank introduces us to the "simplest" of the animals, complexity-wise: beginning with sponges (whose very inclusion in the list as "animals" has been called into question because they are so simple) and finishing with the most complex...

Jessi and Squeaks discover some amazing ocean creatures, ones that glow by themselves!

Combination of calamari and garlic is one of the easiest and most wonderful ways to prepare squid. Try this amazingly tasty recipe and enjoy the perfect meal.

Join Nate Jaros, curator of fish and invertebrates at Aquarium of the Pacific, to learn what it takes to care for these aquatic oddities.

Cephalopods, a group that includes octopus and squid, are a bunch of aquatic oddballs with some really unique behaviors.

Cephalopods, a group that includes octopus and squid, are a bunch of aquatic oddballs with some really unique behaviors.

Learn how to prepare squid for deep-frying, slow cooking, barbecuing and pan-frying. See our expert tips and techniques.

Join Nate Jaros, curator of fish and invertebrates at Aquarium of the Pacific, to learn what it takes to care for these aquatic oddities.

Cephalopods, a group that includes octopus and squid, are a bunch of aquatic oddballs with some really unique behaviors.

Learn how to prepare Japanese food like a true master! From traditional classics, to the secrets of home-cooking, learn the art of sushi making, tempura frying and Okonomiyaki-style grilling. Plus, sample regional dishes from Hokkaido to...

Learn how to prepare Japanese food like a true master! From traditional classics, to the secrets of home-cooking, learn the art of sushi making, tempura frying and Okonomiyaki-style grilling. Plus, sample regional dishes from Hokkaido to...

Rare footage of a bigfin squid captured by a ROV deployed 11,000 feet deep in the Tonga Trench.<b<br/>r/>

Credit: Deep Sea Research Center, University of Western Australia

Rare footage of a bigfin squid captured by a ROV deployed 11,000 feet deep in the Tonga Trench.<b<br/>r/>

Credit: Deep Sea Research Center, University of Western Australia