I had always thought that water didnt have its own shape, that it takes the shape of the object that its placed in. in the picture i have attached it shows water having a sphericle shape, as if it has a skin on the outside keeping its shape. i thought water was very maluable and that its molecules are freely floating (yeah i know that sounds like the scientific explination of primary school, but thats the only way i know how to explain it, but its the general idea).. i think.