Permeable or porous rocks
trough
it is called 'wake'
troughits called a trough
Another name for a mortar trough is a hod
Most large stock water troughs can hold about 100-180 gallons. Some, depending on the brand name and shape of the trough, can hold anywhere from 150-200 gallons.
Grainy rocks not only absorbs water better than crystal rocks, but it filters the water as well.
Maybe the reference is to an aquifer.
the type of rock is called a rock that does not allow water to go through it
The answer is a hod.
No rock can swim because rocks are not living things.
trough (pronounced "troff")
Feed bunk.