He can see ripples there, like very small waves: a tidal river.

NEWYORKER: Getting Closer

It is the second-highest tidal river in the world.

BBC: Inquiry into four river deaths

During the research, a team led by Dr Hamish Campbell, from the University of Queensland, captured 20 crocodiles living in the North Kennedy tidal river in Queensland, northern Australia, and tagged them with satellite transmitters.

BBC: Crocodiles 'surf' long distance on ocean currents

The proposals form part of Peel Energy's vision to develop the mouth of the River Mersey into a "renewables hub" and sits alongside plans to harness tidal power from the river.

BBC: Wind farm power claims questioned

Tidal inlet: a river mouth or narrow gap between islands, within which salt water moves landwards during a rising tide.

UNESCO: L O S S A R Y

To the east was a tidal strait (the East River) teeming with striped bass, blackfish and fluke that came in with each replenishing tide.

FORBES: Brookies Under Broadway

After they moved into their own Monticello in 1991, the Kauffmans became enamored of the river's fragile ecosystem: the tidal marshes, the nesting osprey and the threatened native oyster beds.

FORBES: Ultradeductible

They are aiming to establish the tidal flow rate at various depths in order to assess the river's potential to generate electricity.

BBC: Research into River Dart's tidal power potential

Flood-tide delta: accretionary deposit of sand found on the bay or river side of an inlet and usually formed by tidal currents.

UNESCO: L O S S A R Y

Tidal currents exceed 12 knots at times, creating tidal rapids with massive whirlpools that can make the sea look more like a raging river.

FORBES: Canadian Pipeline Wars

Minor tidal flooding was possible along the Delaware coast, the western shore of the Chesapeake Bay and the lower Potomac River, the National Weather Service said.

NPR: Snow Storm Barrels Through Midwest To Mid-Atlantic