Bryozoa File

: They possess a U-shaped digestive tract with both a mouth and an anus. Because the anus is located outside the tentacle crown, they are also known as Ectoprocta ("outside anus").

: Zooids secrete a protective chamber called a zooecium, which can be gelatinous, chitinous (like insect shells), or calcified (like coral). bryozoa

: Most species live in the ocean, ranging from tropical coral reefs to polar waters and even deep-ocean trenches. They often encrust rocks, shells, and kelp. : They possess a U-shaped digestive tract with