Can someone answer this question
Ok i got this question about Naruto, and no one can seem to answer it, heres the question.
During Kakashi's and Zabuza's 1st fight, when Kakashi got kicked he tried to escape into the water but he noted the water is heavy so he couldnt escape from Zabuza's Water Prison.
Some people have said Zabuza embedded his chakra into the water so it was more dense, however, if Zabuza's chakra was embedded in the water, wouldnt Kakashi see it with his Sharingan? if so he wouldnt try to escape into the water.
Also, it couldnt be heavy while forming the handseals for the Water Prison because even before Zabuza started to do the handseals Kakashi noted it was heavy
Something doesnt add up here, if someone is smart enough to answer this question it would be very appreciated.