This limits them to a specific depth range in which the surface is accessible.

The depth range that it can be found is within 50 - 194 meters.

It can be found within a depth range of 1 to 23 metres.

The depth range of this species is possibly from 200 to 400 m.

Their depth range is anywhere between 2 and 32 meters.

Its depth range is from approximately 6 to 91 meters.

It lets a single floating mine cover a much larger depth range.

It is known from a depth range of 270-600 metres.

Its usual depth range is from 3 to 15 metres.

This species lives generally in the depth range of 2 - 35 meters.