Bryozoans

Bryozoans are colonial animals like corals, but are not closely related. Their name means “moss animal.” Individual bryozoan animals use tentacles to grab passing food from the water. These individuals are much more complex than the polyps of corals. Bryozoans are common animals in most marine ecosystems today, but tend not to be noticed. Their colonies frequently form crusts on kelp fronds or on hard surfaces (rocks or shells) and are thus “encrusters” like some types of corals and barnacles. Some species formed delicate branching structures, while others are usually found encrusted on other fossils.