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...
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.