TheYellow Sponge
Yellow sponges are said to live in the Pacific ocean. They have a very simple digestive system that keeps them alive looking beautiful. These sponges cannot move so their food has to come to them. They feed on sources such as algae and bacteria that attach to them. They way they attach to them is that sponges have all sorts of pores in which water travels and as this water travels through cells in the Yellow sponges wall capture food. The food is taken in through the process of phagocytosis and each individual cell begins to digest the food. The water absorbed flows out through the osculum, which is an exit and the process repeats.
The Harp Sponge
The Harp sponge is a type of sponge that is different among its family. Instead of preying on algae or bacteria they take their appetite somewhere else and feed upon small fish and wandering crustaceans. The Harp sponges' digestive system is similar to that of the Yellow sponge despite a different source of food. The only difference is that in the start of digestion the cells of the Harp sponge move to the captured prey to digest it rather than staying stationary. The food again is taken in through phagocytosis and each individual cell begins to digest the food.
The Vase Sponge
The Vase sponge can be found around the Carribean and Florida. It is a beautiful vase-like marine organism that would not make a bad gift to a loved one. It is another stationary sponge that obtains its nutrients from food through its pores and water canals. The water is able to move through this sponge and other sponges do to flagella of collar cells inside the pores.Cells capture food such as protozoans, bacteria, and algae. This food then goes through phagocytosis and each cell of the organism digests the food. This sponge, like many others is able to filter feed through what is called the porocyte and absorb nutrients needed for survival. The water absorbed flows out through the osculum, which is an exit.