Aquatic animals that make up the phylum Porifera.
They attach themselves firmly to a surface and do not move.
Pores made by choanocytes beating their flagella and drawing water into the sponge.
The opening at the top of the sponge.
Flexible protein fibers
Tiny, hard particles of calcium carbonate or silicon dioxide that are often shaped like spikes.
Where choanocytes trap plankton and other tiny organisms in their small, hairlike projections.
Crawling cells that crawl about within the body wall and deliver the nutrients to the rest of the body.
Food-filled ball of amoebocytes surrounded by a protective coat made of organic material and spicules.
Regrowth of missing cells, tissues, or organs.
Produces both eggs and sperm.
Specialized for swimming, bell shaped.
Specialized for a sessile existence, vase shaped.
Jellylike material between the epidermis and gastrodermis.
Hollow gut in the center of the body which has a single opening, or mouth.
Flexible extensions surrounding the mouth.
Specialized cells used for defense and capturing prey.
Has a long filament coiled up inside.
Diffuse web of interconnected nerve cells.
Polyps build up these large, rock-like formations.
Secrete a sticky substance that binds to their prey.
Sensory structure at the end of the ctenophores' body.
Production of light by means of a chemical reaction.