( ( It ( ( feeds mainly ) ( on sponges ) ) ) ( , ( it ( ( ( is usually ) ( found ( ( ( ( ( ( in ( warm water ) ) , ) ( in ( coral reefs ) ) ) , ) and ) ( in oceans ) ) ) ) . ) ) ) )
(ROOT (S (S (NP (PRP It)) (VP (VBZ feeds) (ADVP (RB mainly)) (PP (IN on) (NP (NNS sponges))))) (, ,) (NP (PRP it)) (VP (VBZ is) (ADVP (RB usually)) (VP (VBN found) (PP (PP (IN in) (NP (JJ warm) (NN water))) (, ,) (PP (IN in) (NP (NN coral) (NNS reefs))) (, ,) (CC and) (PP (IN in) (NP (NNS oceans)))))) (. .)))
It feeds mainly on sponges, it is usually found in warm water, in coral reefs, and in oceans.
(ROOT (S (NP (NP (NNP Ocean) (NNP ridges)) (VP (VBN formed) (PP (IN by) (NP (NP (JJ marine) (NNS invertebrates)) (VP (VBG living) (PP (IN in) (NP (JJ warm) (JJ shallow) (NNS waters))) (PP (IN within) (NP (NP (DT the) (JJ photic) (NN zone)) (PP (IN of) (NP (DT the) (NN ocean)))))))))) (VP (VBP are) (VP (VBN called) (NP (NN coral) (NNS reefs)))) (. .)))