Animal feeds and feed components are provided which comprise tunicatematerial. The tunicate material may bewhole tunicate, e.g. washed and/or dried, or a tunicate extract. Preferredtunicate extracts include protein- and/or lipid-enhancedextracts. 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.