Simple Animals: Sponges, Jellies, & Octopuses - Crash Course Biology #22
Early Animal Evolution, From Sponges to Jellyfish
Phylum Porifera: Sponges
Echinoderms and sponges for kids - Invertebrate animals - Natural Science for kids
Complex Animals: Annelids & Arthropods - CrashCourse Biology #23
Jellies and Sponges: Invertebrates from the Deep
the history of sea sponge's
Sponges and Jellies Lecture
The Cells of a Porifera (sponge)
Cnidarians: Squishy Stingy animals! | JONATHAN BIRD'S BLUE WORLD
Invertebrates | The Dr. Binocs Show | Learn Videos For Kids
What Are Cnidarians? | Learn all about the phylum of jellyfish, coral reefs, sea anemones, and more!
The First Animal Ever on Earth
Common Ancestry Pt. 4
Whelan: Error, signal, and the placement of Ctenophora sister to all other animals
Jellyfish 101 | Nat Geo Wild
The First Animals: sponge or ctenophore?
Sponges: Keeping Life Simple
Animal Development: We're Just Tubes - Crash Course Biology #16
Animals: Tour of 9 Phyla
Simple Animals
Sponges revealed as sister-group to all other animals
Ancient gene linkages support ctenophores as sister to other animals (Abstract)
Animal Classification: The Invertebrates Song
The Simplest Invertebrates
