Ebb-tidal current: flow of water in a given direction that takes place between high water and low water.

UNESCO: L O S S A R Y

Foreshore: zone between the high water and low water marks.

UNESCO: L O S S A R Y

Ebb-tide: the falling tide, part of the tidal cycle between high water and the next low water.

UNESCO: L O S S A R Y

Flood-tide current: flow of water in a given direction that takes place between low water and high water.

UNESCO: L O S S A R Y

Flood-tide: rising tide, part of the tidal cycle between low water and the next high water.

UNESCO: L O S S A R Y

Consider celery, often proposed as a negative-calorie food due to its low-calorie count, high water density, and impressive fibre content.

BBC: Who, Why, What: Can foods have negative calories?

It would hold on to water and then let it out through turbines at both high and low tides which would generate electricity.

BBC: An artist's impression of how the lagoon could look

"Whether it is a high water level or low, the Merced River flows year round and the current can pull anybody in, " said Gediman.

CNN: STORY HIGHLIGHTS

Put them in a saucepan with lightly salted water to cover, bring to a boil over high heat, reduce the heat to low, and simmer until the leeks are very tender, about 20 minutes.

CNN: Keftes de Prasa (Leek Fritters)