( ( Often ( called ( the ( Littoral Zone ) ) ) ) ( , ( it ( ( is ( ( the ( transition zone ) ) ( between ( ( ( the ( terrestrial ecosystems ) ) and ) ( the ocean ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (ADVP (RB Often)) (VBN called) (NP (DT the) (NNP Littoral) (NNP Zone)))) (, ,) (NP (PRP it)) (VP (VBZ is) (NP (NP (DT the) (NN transition) (NN zone)) (PP (IN between) (NP (NP (DT the) (JJ terrestrial) (NNS ecosystems)) (CC and) (NP (DT the) (NN ocean)))))) (. .)))
Often called the Littoral Zone , it is the transition zone between the terrestrial ecosystems and the ocean.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (JJ lightless) (NN part)) (PP (IN of) (NP (DT the) (NN ocean) (JJ aphotic) (NN zone))))) (. .)))