X-Nico

unusual facts about low tide



Aboiteau

A wooden sluice or aboiteau (plural aboiteaux) is then built into the dyke, with a hinged door (clapper valve) that swings open at low tide to allow fresh water to drain from the farmland but swings shut at high tide to prevent salt water from inundating the fields.


see also

Cantre'r Gwaelod

Presenter Neil Oliver visited the sands of Aberdyfi and Ynyslas, near Borth, and examined the remains of the submerged forest and Sarn Badrig which are revealed at low tide, assisted by local historians and dendrochronologists.

Chhera Island

During low tide period, the Chhera island can be reached by walking for about two and a half hours from St. Martin's Island.

Discodorididae

One example of a discodoridid is the "Pacific sea lemon" or "speckled sea lemon", Peltodoris nobilis, which occurs off the coast of British Columbia to Baja California from low-tide waters to a depth of about 200 m.

Eelgrass limpet

The eelgrass limpet now appears to be totally extinct, but up until the late 1920s, this species was apparently quite common, and was easy to find at low tide in eelgrass beds, in many sheltered localities on the northeastern seaboard of North America.

Mediterranean mussel

The distribution spans an area from the Namibian border to Port Alfred, intertidally to just below the low tide border.

Pocock Racing Shells

They were commissioned to build to single sculling boats for the Vancouver Rowing Club’s boathouse, without moorage, and found that at low tide they rested precariously on the mud flats.

Port Erin

The outer breakwater, visible at low tide only, was an abandoned project constructed in 1863 using the Port Erin Breakwater Railway and saw the first steam locomotive used on the island; a severe storm of 1884 later destroyed the breakwater and it was never rebuilt.

Stanpit

During periods of low tide, channels and creeks began to appear and the isolated banks of silt became colonised by plants such as Glassworts, Sea Purslane and Seablite all of which have a high tolerance to salt water.

Taboga Island

At low tide, the northern end of the island is joined by a sand bar to the small island of El Morro, and the southeastern end is 270 meters from the neighboring Urabá island.

Tectura palacea

The shell dimensions are narrow to correspond with the limpet's habitat: the narrow blades of surfgrasses in the genus Phyllospadix, found at low tide levels.

Titchfield

Several miles to the south of the village, at the mouth of the River Meon and on the shores of the Solent, is Titchfield Haven National Nature Reserve, where there is a small harbour that dries out at low tide.