1. Sponges: Sponges are the most common type of poriferan. They are sessile, meaning they are attached to a surface and cannot move. Sponges have a porous body with many small pores that allow water to flow through. Water carries food and oxygen into the sponge, and waste products are carried out.
2. Sea Squirts: Sea squirts are sessile animals that live in the ocean. They have a sac-like body with two openings. Water enters the sea squirt through one opening, and it exits through the other opening. Sea squirts use their muscles to filter food particles from the water.
3. Salps: Salps are free-swimming animals that live in the ocean. They have a barrel-shaped body with two openings. Water enters the salp through one opening, and it exits through the other opening. Salps use their muscles to move through the water.
4. Doliolids: Doliolids are free-swimming animals that live in the ocean. They have a cylindrical body with two openings. Water enters the doliolid through one opening, and it exits through the other opening. Doliolids use their muscles to move through the water.
5. Larvaceans: Larvaceans are free-swimming animals that live in the ocean. They have a tadpole-shaped body with two openings. Water enters the larvacean through one opening, and it exits through the other opening. Larvaceans use their muscles to move through the water.