A lining of the inner surface of a sponge's central cavity
Organisms that obtain food by taking it from the water that passes through them
A thin whip like structure that beats back and forth to keep water from moving through the sponge
Phylum meaning "pore bearing"
Sharp glass or chalk-like structures that support and form the skeleton of a sponge
Flexible material that make up the skeleton of some sponges
Phylum meaning "stinging cells"
Special stinging structures on cnidarians that look like small harpoons
The bell-shaped part of a medusa cnidarian where food is digested
Bowl-shaped form of cnidarians
The jelly layer inside between two cell layers
Vase-shaped body form of a cnidarian
An organism that does not move. It remains attached to one place