But I didn't feel safe with just one seat of open water up.

That thin black line you see means open water above.

Once we were in open water, they went below together.

Then they were gone, and the view went out over open water.

About 3.88% of the district is covered by open water.

They emerged into open water once more, and looked around.

They are found in open water and on the sea bed.

At that point, we didn't know there was open water in front of us.

Some open water remained at one end of the car.

But across the lake, there is likely to be open water several miles wide.