( ( ( ( ( ( Most sponges ) ( live ( in ( the ocean ) ) ) ) , ) but ) ( ( some species ) ( live ( in ( fresh water ) ) ) ) ) . )
(ROOT (S (S (NP (JJS Most) (NNS sponges)) (VP (VBP live) (PP (IN in) (NP (DT the) (NN ocean))))) (, ,) (CC but) (S (NP (DT some) (NNS species)) (VP (VBP live) (PP (IN in) (NP (JJ fresh) (NN water))))) (. .)))
Most sponges live in the ocean, but some species live in fresh water.
(ROOT (S (NP (RBS Most) (JJ red) (NN algae) (NNS species)) (VP (VBP live) (PP (IN in) (NP (NNS oceans)))) (. .)))