Along with other microscopic organisms (dinoflagellates, diatoms, bacteria, etc.), we become a tiny particle and are pulled through the canals of a sponge. Along the way we learn that sponge cells catch food and make spicules(microscopic structures that help support the sponge’s body). We are swept into the ‘heart’ of the sponge where choanocyte cells with beating flagellae produce the current that eventually carries us out of the sponge body.
Sponge Animation: Wild Ride Through a Sponge
Next Generation Science Standards for this Video
Sponges don’t have tissues and organs. The beating choanocyte cells (specialized cells with flagellae) and the porous structure of a sponge’s body are adapted to pump water throughout its body. This brings food to all the sponge’s cells.
The sponge’s body is a system of canals and chambers open to the outside seawater. The beating choanocyte cells(specialized cells with flagellae) pump water through this porous body to bring food to all the sponge’s cells.