( ( ( The ( Island 's ) ) shoreline ) ( ( is ( ( a ( sheer cliff ) ) ( ( ( ( rising 100 ) ( above ( ( ( the ocean ) and ) 30 ) ) ) ( below ( ( the ( water 's ) ) surface ) ) ) ( to ( the ( ocean floor ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNP Island) (POS 's)) (NN shoreline)) (VP (VBZ is) (NP (NP (DT a) (JJ sheer) (NN cliff)) (VP (VBG rising) (NP (CD 100)) (PP (IN above) (NP (NP (DT the) (NN ocean)) (CC and) (NP (CD 30)))) (PP (IN below) (NP (NP (DT the) (NN water) (POS 's)) (NN surface))) (PP (TO to) (NP (DT the) (NN ocean) (NN floor)))))) (. .)))
The Island's shoreline is  a sheer cliff rising 100 above the ocean and 30 below the water's surface to the ocean floor.
(ROOT (S (NP (NP (NNS Seamounts)) (SBAR (WHNP (WDT that)) (S (VP (VBP rise) (PP (IN above) (NP (DT the) (NN water) (NN surface))))))) (VP (VBP are) (VP (VBN called) (NP (NNS islands)))) (. .)))