( ( Below ( ( the water ) ( s surface ) ) ) ( , ( oysters ( ( ( ( ( ( ( attach themselves ) ( to ( ( the roots ) ( of ( mangrove trees ) ) ) ) ) , ) and ) fish ) ( ( come ( into ( ( this part ) ( of ( the river ) ) ) ) ) ( to breed ) ) ) . ) ) ) )
(ROOT (S (S (ADVP (RB Below)) (NP (DT the) (NN water)) (VP (VBZ s) (NP (NN surface)))) (, ,) (NP (NNS oysters)) (VP (VP (VBP attach) (NP (PRP themselves)) (PP (TO to) (NP (NP (DT the) (NNS roots)) (PP (IN of) (NP (JJ mangrove) (NNS trees)))))) (, ,) (CC and) (RB fish) (VP (VBN come) (PP (IN into) (NP (NP (DT this) (NN part)) (PP (IN of) (NP (DT the) (NN river))))) (S (VP (TO to) (VP (VB breed)))))) (. .)))
Below the water s surface, oysters attach themselves to the roots of mangrove trees, and fish come into this part of the river to breed.
(ROOT (S (NP (JJ Stilt) (JJ like) (NNS roots)) (VP (VBZ helps) (S (NP (JJ mangrove) (NNS trees)) (VP (VB rise) (ADJP (JJ high) (PP (IN above) (NP (DT the) (NN water))))))) (. .)))