Marc Springman, age 10, of Williamsport, Pennsylvania, for his question:

Is any part of the sea a mile deep?

It takes almost half an hour to walk a mile. This is a goodly distance. Surely the floor of the sea cannot be a whole mile below the waves on the surface, or so one would think. Actually, the water around the shores and beaches is not a mile deep. But farther out to sea, it gets deeper, deeper and deeper. Out in the middle of the ocean, the water is two miles deep and even much more.

Some o£ the oceans are deeper than others. What's more the floor of the sea is as bumpy as the dry land. So some places are deeper than others. The deepest ocean is the Pacific. If its bumpy floor were leveled, the whole thing would be more than two and a half miles below the waves. As it is, the Pacific has one deep pit that dips down more than six miles. The Atlantic and the Indian Oceans are both more than two miles deep. And one pit in the Atlantic dips down more than five miles.