( ( These animals ) ( ( ( are also ) ( ( piscivorous , ) ( which ( means ( they ( feed ( on ( ( ( ( fish , ) and ) not ) ( otters ( or ( sea lions ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS animals)) (VP (VBP are) (ADVP (RB also)) (NP (NP (NNS piscivorous)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ means) (S (NP (PRP they)) (VP (VB feed) (PP (IN on) (NP (NP (NN fish)) (, ,) (CC and) (RB not) (NP (NNS otters) (CC or) (NN sea) (NNS lions))))))))))) (. .)))
These animals are also piscivorous, which means they feed on fish, and not otters or sea lions.
(ROOT (S (NP (NNP Sea) (NNS otters)) (VP (VBP are) (VP (VBN known) (PP (IN for) (S (VP (VBG being) (ADJP (JJ playful) (CC and) (JJ frisky))))))) (. .)))