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...

If you trace your way back along the tree of life, eventually you'd come face-to-face with the very first animal. But what exactly would that animal have looked like?

Salps are more than just strange balls of goo drifting through the sea—in fact, they’re more closely related to us than they are to jellyfish, and play a huge role in marine ecosystems and the global carbon cycle as the “vacuum cleaners...

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...

We have now completed our study of every single animal phylum but one: Chordata. This is the one that contains humans, as well as the most common animals we interact with every day, like our pets. There are about 81,600 species of...

Many people presume that all members of Chordata have a backbone, but that actually is not true. Vertebrates have backbones, meaning members of subphylum Vertebrata. There are two other subphyla within Chordata, those being...

Continuing with the invertebrate chordates, we arrive at subphylum Tunicata, also known as the tunicates. There are over 3,000 species within this clade, and the creatures are fascinating. The body of a tunicate is enclosed in a thick...

This live-action video program is about Phylum. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful, animated graphics and...

Este programa de video de accion en vivo es sobre la palabra filo. El programa esta disenado para reforzar y apoyar la comprension y retencion del estudiante de la palabra mediante el uso de secuencias de video, fotografias, diagramas y...

Alright, we've learned about how unicellular organisms came to be, how they became multicellular, and then from those how evolution by natural selection produced all the species in the world today. But there are so many! Millions and...

Biological Classification Set: This clip introduces the phylum of Chordata and the three subphyla of animals of which it is composed

Soon we are going to dive into a study of all the different kinds of animals, but first we need some kind of road map. What are all the major divisions of Kingdom Animalia? Below kingdom is phylum, so how many animal phyla are there, and...

This video provides a comprehensive overview of the phylum Chordata and its five major vertebrate classes: fish, amphibians, reptiles, birds, and mammals. It explains their distinguishing characteristics, such as their body temperature...

All living things are grouped into 5 kingdoms. In this video we are going to look at the animal kingdom in more detail. There are thought to be over 7.5 million species of animal on planet Earth, of which 900,000 have been described....