ani roah (roeh) máyim ckhulim
why is blue plural?
Water in Hebrew - מים - is always plural.
I was wondering if a solution with את would work here too? אני ראוה את המים?
No: "I see water" = "אני רואה מים", "I see the water" = "אני רואה את המים".
So in this sentence there's no 'the', and therefore there shouldn't be "את ה".