PORIFERA: Sponges
The wonderful world of sea sponges
Crash course: Simple Animals (Sponges)
Jonathon Bird's Blue World: Sponges
The wonderful world of sea sponges
Crash course: Simple Animals (Sponges)
Jonathon Bird's Blue World: Sponges
CNIDARIAN: Jellyfish
PLATYHELMINTHES: Flatworms
ROTIFERA
NEMATODES: Roundworms
ANNELIDS: Earthworms
ARTHROPODS: