( ( ( The ( Aphotic Zone ) ) ( of ( the ocean ) ) ) ( ( ( is ( ( the water ) deeper ) ) ( than ( ( ( ( ( about 800 ) meters ) ( -LRB- ( ( 2,625 feet ) -RRB- ) ) ) , ) ( ( beyond which ) ( ( no light ) penetrates ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNP Aphotic) (NNP Zone)) (PP (IN of) (NP (DT the) (NN ocean)))) (VP (VBZ is) (ADVP (NP (DT the) (NN water)) (JJR deeper)) (PP (IN than) (NP (NP (NP (QP (RB about) (CD 800)) (NNS meters)) (PRN (-LRB- -LRB-) (NP (CD 2,625) (NNS feet)) (-RRB- -RRB-))) (, ,) (SBAR (WHPP (IN beyond) (WHNP (WDT which))) (S (NP (DT no) (NN light)) (VP (VBZ penetrates))))))) (. .)))
The Aphotic Zone of the ocean is the water deeper than about 800 meters (2,625 feet), beyond which no light penetrates.
(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))))) (. .)))