Sponges are bottom-dwelling creatures that grow connected to a solid object. They are discribed as the simplest of multi-cellular animals. A sponge survives by pumping water through it's body. While the water circulates through the sponge, tiny pores absorb oxygen and nuitrents. These pores are lined with collar cells that capture bacteria and other organisms and filter out wastes.
Sponges are invertebrates.
I focused my report on the Loggerhead sponge. The Loggerhead sponge is a home for many marine animals. As many as 16,000 different species of animals have been found in one loggerhead sponge. The Loggerhead sponge can reach nearly two meters in diameter, and is the most abundant sponge found in the Bahamas. The sponge is usually an olive green color and is found in the shallow shoals that surround the islands of the Bahamas.