seem like mere splashing around in the muck 
(ROOT (VP (VB seem) (PP (IN like) (NP (JJ mere) (S (VP (VBG splashing) (ADVP (RB around)) (PP (IN in) (NP (DT the) (NN muck)))))))))
(ROOT (VP (VB ) (PP (IN ) (NP (JJ ) (S (VP (VBG ) (ADVP (RB )) (PP (IN ) (NP (DT ) (NN )))))))))