No; they do not weigh so much.
When we drop lead in a vessel full of water, what becomes of the water?
The water is forced over the sides of the vessel.
How much water is thus forced over the sides of the vessel?
A quantity equal in bulk to the lead dropped into the vessel.
When the water thus displaced weighs just one pound, how much less will the lead weigh while in the water than it did in the air?
It will weigh one pound less.
Then how much less is the weight of a body in water than it is in air?
Its weight in the water is as much less as the weight of the water which it displaces.
When a body has greater specific gravity than water, what will it do?