How does digestion occur with sponges?

Sponges digest food through a process called filter feeding. They draw water into their bodies through tiny openings called ostia, trapping microscopic particles like bacteria and organic matter in specialized cells known as choanocytes. These cells use their flagella to create water currents and capture food particles, which are then engulfed and digested within the cells. The waste products are expelled back into the water through the larger opening called the osculum.