Hydras and some sea anemones can move slowly over rocks and sea or stream beds by various means: creeping like snails, crawling like inchworms, or by somersaulting. A few can swim clumsily by waggling their bases.
HYdRAS and sOme sEa aneMones can MovE SLOwly oVEr rOCKS and Sea oR stReAM beds bY vaRiouS means: CreEping like SnAils, CrAwlInG Like InChworMs, oR by sOmERsaultiNg. a few can SwIm CluMSilY by WaggLing THEiR bases.