If fish are denied access to the water surface, they quickly die.

A large snout broke the water surface not far away and quickly submerged.

The water surface, though, was sheltered quite well by the clumps of rushes.

The disk had icecaps and a reasonable proportion of land and water surface.

Half-baked shells of what would one day become multi-million-dollar yachts rode the water surface.

These tags sent information about an individual's position when it came to the water surface.

Larvae consistently flicked the fan nearest the water surface significantly more often than the lower fan.

Their smell calls out midges from over-wintering pupae, and these lay eggs on the water surface.

But as the tide rises, its water surface falls below sea level, and the river switches direction.

In dry seasons the ground- water surface sinks.

In South Sweden, free water surface wetlands have been built to treat wastewater from municipal wastewater treatment plants.

In this paper, we report experimental evidence of wave chaos using the double slit water surface wave experiment.

In a humid climate the larger ravines through which the run-off flows soon descend below the ground- water surface.

Excavations made in permeable rocks below the ground- water surface fill to its level and are known as wells.

A water surface for the disengagement of the steam from the water, of sufficient extent to prevent foaming.

Unconscious, he was carried by an eddy towards the shore, where his head lolled above the water surface.