SciShow
How These Animals Lost Their Heads (And Bodies, and Butts)
You'd think that there are some features that, once an animal group evolved to have them, could never really go away, right? Well, Stefan is joined today by hosts from PBS Eons, Journey To The Microcosmos, and Bizarre Beasts to break...
PBS
How the Starfish Got Its Arms
The story of how the starfish got its arms reminds us that even animals that might be familiar to us today can have incredibly deep histories - ones that stretch back almost half a billion years.
PBS
How Blood Evolved (Many Times)
Blood is one of the most revolutionary features in our evolutionary history. Over hundreds of millions of years, the way in which blood does its job has changed over and over again. As a result, we animals have our familiar red blood....
Amoeba Sisters
Animals: Tour of 9 Phyla
Join the Amoeba Sisters in exploring some general animal characteristics, major vocabulary used in classifying animals (such as symmetry, protostome vs deuterostome, cephalization, and coelom), and take a general tour of 9 major animal...
SciShow
Why Sexy Is Sexy
Hank delves into the scientific reasons behind why we are attracted to the people we're attracted to. It's complicated.
Crash Course
Animal Development: We're Just Tubes - Crash Course Biology
Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes.
TED-Ed
TED-ED: The science of symmetry - Colm Kelleher
When you hear the word symmetry, you might think generally of triangles, butterflies, or even ballerinas. But defined scientifically, symmetry is _a transformation that leaves an object unchanged." Huh? Colm Kelleher unpacks this...
Nature League
Exploring Invertebrates | Compilation
Brit looks back on our third month on Nature League, when we explored the theme of invertebrates.
Visual Learning Systems
Simple Animals: Worms
Upon viewing the Simple Animals video series, students will be able to do the following: Differentiate between and provide examples of vertebrate and invertebrate animals. Describe the basic body parts of a sponge (porifera). Explain the...
Professor Dave Explains
Phylum Cycliophora: Ring-Bearing Symbions
Creatures in the cycliophora phylum have a particularly strange structure and lifestyle. All of these animals live their lives attached symbiotically to the mouthparts of cold-water lobsters. Let's look at their anatomy and reproductive...
Professor Dave Explains
Organization and Symmetry in Kingdom Animalia
How are the contents of animals organized? How does this differ from animal to animal? Are all animals symmetrical, and in the same ways? Just a bit more information to get through before diving into all the animal phyla, I promise!
Next Animation Studio
Creature that lived more than 555 million years ago is the 'oldest ancestor of all living creatures'
Geologists examining fossil impressions from South Australia have found evidence of the earliest relative of most animal life on Earth, a tiny, wormlike creature that lived 555 million years ago, according to a study published in the...
Wonderscape
Science Kids: Exploring the World of Invertebrates
This video is a lesson on invertebrates, the largest group in the animal kingdom. It explains the two main groups of animals - vertebrates and invertebrates - and focuses on the characteristics and examples of invertebrates. The video...
Visual Learning Systems
Exploring the World of Worms
This video provides an overview of the different phyla of worms, including flatworms, roundworms, and segmented worms. It explains their characteristics and habitats, such as the microscopic planarians found in water, the tube-like...
Ancient Lights Media
Biological Classification - Worms & Molluscs
Biological Classification Set: This clip looks at the three major phyla of worms: the Platyhelminthes, Nematoda and Annelida. As well as examining the phylum Mollusca.
Nature League
What Are Invertebrates? - Lesson Plan
In this Nature League Lesson Plan, Brit introduces the invertebrates of Earth, including their names, relationships, forms, and awesomeness.
TED-Ed
The Science of Symmetry
No matter which way you slice it, the definition of symmetry might not be clear. The narrator of the video reflects on its true meaning as shapes, plants, and animals dance onstage for a captivated cartoon audience. Your class will be...
Nature League
What Are Invertebrates? - Lesson Plan
Insects, and other invertebrates outnumber vertebrates—segmented-legs down! The first in a five-part series of videos from an Invertebrates series introduces these organisms in all their spineless glory. Each invertebrate phyla takes the...
PBS
Bilateral Body Plan
Most animals follow a bilateral body plan. The Shape of Life series presents a short video on why this body plan survived across so many different species. The narrator explains the benefits of symmetry, stereo senses, and more....
PBS
Flatworms: The First Hunter
Flatworms evolved and developed the first bilateral body plan. These hermaphroditic animals with no circulatory system star in an informative video. Scholars learn about flatworms' place in the evolutionary tree, how they hunted, and...
Crash Course
Animal Development: We're Just Tubes
All humans begin as one cell and through mitosis, develop into an organism made of millions of cells, each specialized to keep people alive. The narrator of this short video explains the process by which embryos grow from a morula to a...
Crash Course
Crash Course Biology #16: Animal Development: We're Just Tubes
Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. [11:32]