( ( Marine biomes ) ( ( are ( found ( in ( ( the ( salt water ) ) ( of ( the ocean ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Marine) (NNS biomes)) (VP (VBP are) (VP (VBN found) (PP (IN in) (NP (NP (DT the) (NN salt) (NN water)) (PP (IN of) (NP (DT the) (NN ocean))))))) (. .)))
Marine biomes are  found in the salt water of the ocean.
(ROOT (S (NP (JJ Fresh) (NN water) (NNS biomes)) (VP (VBP are) (VP (VBN defined) (PP (IN by) (NP (JJ low) (NN salt) (NN concentration))))) (. .)))