Animal feeds and feed components are provided which comprise tunicate material. The tunicate material may be whole tunicate, e.g. washed and/or dried, or a tunicate extract. Preferred tunicate extracts include protein- and/or lipid-enhanced extracts. Also provided are uses of tunicates and tunicate extracts as, or in, animal feeds and methods for feeding animals, e.g. fish, comprising administering feeds containing tunicate material.