Lophophore

The lophophore ( /ˈlɒfəfɔər/) is a characteristic feeding organ possessed by four major groups of animals: the Brachiopoda, Bryozoa, Entoprocta, and Phoronida. All lophophores are found in aquatic organisms.

Read more about Lophophore:  Characteristics, Classification of Lophophorates, Etymology