The shore line is broken on both sides by the estuaries of several rivers.
About two dozen ugly-looking species inhabit rivers and estuaries from Bengal to Australia.
Oysters are found in large numbers in the estuaries and fixed to the submerged parts of the mangroves.
The scenery of the neighbouring Orwell and Stour estuaries is pleasant.
Besides these there are a number of small indentations, sheltered anchorages formed by islands and reefs like that of Puerto Cabello, and estuaries and also open roadsteads, like those of La Guaira and Carupano, which serve important ports.
The crocodile is common in many of the rivers and estuaries of Siam, and there are many lizards.
The bay forms a fairly regular curve, broken on the French seaboard only by the estuaries of the Loire, Garonne, Adour and..
The harbours along the sounds and in the estuaries of the rivers are well protected from the storms of the ocean by the long chain of narrow islands in front, but navigation by the largest vessels is interrupted by shoals in the sounds, and especially by bars crossing the inlets between islands.
Of the Physostomi, the siluroids are abundant in the estuaries and muddy waters; the habits of some of these fishes are remarkable, such as that of the males carrying the ova in their mouths till the young are hatched.
Zeeland consists of the delta islands formed about the estuaries of the Maas and Scheldt with its two arms, the Honte or Western Scheldt, and the Ooster Scheldt, together with a strip of mainland called ZeelandFlanders.
Tidal waters furnish minute whitebait, and the mud-flats of salt or brackish lagoons and estuaries flounders - both very delicate eating.
The custom is also common in the estuaries of the Orinoco and Amazon.
The London Clay occupies the tongue of land between the estuaries of the Thames and Medway, as well as Sheppey and a district about 8 m.
Shrimps, soles and flounders are taken in great numbers in the estuaries of the Thames and Medway, along the north coast and off Ramsgate.
The main watershed follows a tortuous course which crosses the mountainous belt just north of New river in Virginia; south of this the rivers head in the Blue Ridge, cross the higher Unakas, receive important tributaries from the Great Valley, and traversing the Cumberland Plateau in spreading gorges, escape by way of the Cumberland and Tennessee rivers to the Ohio and Mississippi, and thus to the Gulf of Mexico; in the central section the rivers, rising in or beyond the Valley Ridges, flow through great gorges (water gaps) to the Great Valley, and by southeasterly courses across the Blue Ridge to tidal estuaries penetrating the coastal plain; in the northern section the water-parting lies on the inland side of the mountainous belt, the main lines of drainage running from north to south.
Those which breed in winter or spring deposit their spawn near the coast at the mouths of estuaries, and ascend the estuaries to a considerable distance at certain times, as in the Firths of Forth and Clyde, while those which spawn in summer or autumn belong more to the open sea, e.g.
Special reversible paddle steamers (called doubleenders) were designed for service in the inlets and estuaries, and sixty-six ironclads were built and employed during the four years.
Meanwhile Thorfinn, with the rest of the venturers, sailed south "for a long time," till they reached a spot they called Hop, at the mouth of a river which flows from a lake into the sea (several estuaries near the southern extremity of Nova Scotia would do equally well here).
Hence rivers in the Appalachians are not navigable; it is only farther down-stream, where the rivers have been converted into estuaries and bayssuch as Chesapeake and Delaware baysby a slight depression of the coastal plain belt, that they serve the purposes of navigation.
The maturely dissected and recently glaciated uplands of New England are now somewhat depressed with respect to sea-level, so that the sea enters the valleys, forming bays and estuaries, while the interfiuve uplands and hills stand forth in headlands and islands.
The estuaries of these rivers are rarely navigable, and along the entire littoral, a distance of 130 m., the only important harbours are at Gijon and Aviles.
This fact is illustrated by the broadening of river mouths and estuaries at this time, and the beginning of the formation of the Zuider Zee.
Sea-aster flourishes in the Wadden of Friesland and Groningen, the Dollart and the Zeeland estuaries, giving place nearer the shore to sandspurry (Spergularia), or sea-poa or floating meadow grass (Glyceria maritima), which grows up to the dikes, and affords pasture for cattle and sheep. Along the coast of Overysel and in the Biesbosch lake club-rush, or scirpus, is planted in considerable quantities for the hat-making industry, and common sea-wrack (Zostera marina) is found in large patches in the northern half of the Zuider Zee, where it is gathered for trade purposes during the months of June, July and August.
In length, but in few places more than a mile in breadth, which is nearly insulated by inlets of the sea and estuaries of streams flowing from the Western Ghats.
The warping which is practised in England is almost exclusively confined to the overflowing of level ground within tide mark, and is conducted mostly within the districts commanded by estuaries or tidal rivers.
Of Dolgelly, between the broad estuaries of the Mawddach and the Dovey.
At the foot of the Cameroon peak a number of estuaries cut deep bays which form excellent harbours.
It is essentially an inhabitant of tidal waters and estuaries, and often goes out to sea; hence its wide distribution, from the whole coast of Bengal to southern China, to the northern coasts of Australia and even to the Fiji islands.
The strips of alluvial land bordering a river are known as haughs, and where in estuaries they expand into wide plains they are termed carses.
On the east indeed, the shores of the estuaries are generally low, but the land between the mouths of these inlets is more or less precipitous.
The upper end of the bay and its northern shores are fringed with swamps through which numerous estuaries penetrate for some distance inland.
In the south, the Lee and the Blackwater intersect the mountains of Kerry and Cork flowing east, and turn abruptly into estuaries opening south.
The entrances to the mouths of both these offering many difficulties for navigation, trade has from the remotest antiquity selected this spot, which is situated half-way between the two estuaries, while the level surface of the neighbouring steppe allows easy communication with the lower parts of both rivers.
It is then cut into by the estuaries of the Vistula, the Pregel and the Memel.
Slow in their movements, and feeding on vegetable substances, they are confined to the neighbourhood of rivers, estuaries or coasts, although there is a possibility of accidental transport by currents across considerable distances.
The Biggleswade well was sunk by processes better known in connexion with the sinking of mine shafts and foundations of bridges across the deep sands or gravels of bays, estuaries and great rivers.
The snock, the steenbrass and geelbeck are common in the estuaries and bays.
The plains near the Olt and Jiu estuaries are rich in Roman remains, notably in the towns of Caracal, Grodjibod and Islaz.
The coast is everywhere low and deeply indented by ragged and shallow estuaries, that of the Thames being the largest.
As for the boundaries of these ancient seas, we can say nothing with certainty, but it is of interest to note the evidence we possess of still older land conditions, such as we have in the old rocks of Shropshire, &c. In the Devonian period it is clear that an elevatory movement had set in towards the north, which gave rise to the formation of inland lakes and narrow estuaries in which the Old Red Sandstone rocks were formed, while in the south of England lay the sea with a vigorous coral fauna.
To I in., the coast being assumed to run up estuaries until the breadth became 1 m., and no bays or headlands of less than I m.
On the west there are Solway Firth, Morecambe Bay, the estuaries of the Mersey and Dee, Cardigan Bay of the Welsh coast, and the Bristol Channel and Severn estuary.