Dan moved along at a shallow depth, ten feet or so, till he ran out of air.

Very low working distance and extremely shallow depth of field.

But he argued that they may be confined to relatively shallow depths.

The coal is found at a shallow depth which made mining in the area relatively easy.

That means they have to be at shallow depth, and their sonar performance is down because they're close to the surface.

However, the sand becomes moist at a relatively shallow depth.

For the size of the lake, it has an oddly shallow depth in most areas.

He looked behind and all about, listening, then lay down to stare into the shallow depths.

This can also explain very high temperatures at shallow depths.

Then I began using an extraordinarily shallow depth of field, so only the eyes are in focus.