While corals are almost entirely restricted to warm, shallow marine waters, other cnidarians live in the depths, in polar seas and in freshwater.

In areas of shallow bedrock, most foundations may bear directly on bedrock ; in other areas, the soil may provide sufficient strength for the support of structures.

During times of heavy rainfall, much of the savannah area is covered by shallow water, making transportation by means other than a shallow-draft boat almost impossible.

They actually have a shallow history, and though unadon ( kabayaki eel bowl ) and ( tempura bowl ) that go back to the late Edo Period, the oyakodon ( chicken-egg combo bowl ) is a Meiji era innovation, with other ) donburi dishes following suit in later years.

Results against plate armour of " minimum thickness " ( 1. 2mm ) were similar to the coat of plates, in that the needle bodkin penetrated to a shallow depth, the other arrows not at all.

The earliest was the bow ard, which consists of a draft-pole ( or beam ) pierced by a thinner vertical pointed stick called the head ( or body ), with one end being the stilt ( handle ) and the other a share ( cutting blade ) that was dragged through the topsoil to cut a shallow furrow ideal for most cereal crops.

The combination of these factors means that sirenians are restricted to warm shallow coastal waters, estuaries, and rivers with healthy ecosystems that support large amounts of seagrass and / or other vegetation.

Some were purpose-built just for cycling, others were built as parts of facilities for other sports ; many were built around athletics tracks or other grounds and any banking was shallow.

It was originally defined as a light fast sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into the shallow waters of the Low Countries.

Yacht (, from Dutch / Low German jacht meaning hunting or hunt, compare Standard German / High German Jagd ) was originally defined as a light, fast sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into the shallow waters of the Low Countries.

Surface waters, including the Rio Grande and other streams, are hydrologically connected to the " unconfined aquifer " a shallow ground water formation which underlies much of the valley.

Negative pressure in the system may cause shallow groundwater to be pulled into a leaky water supply system, polluting it with microorganisms, dirt, sand, fertilizers, and any other toxic contaminants that may be in the groundwater ;

Hares do not bear their young below ground in a burrow as do other leporids, but rather in a shallow depression or flattened nest of grass called a form.

Already adapted to breathe air and move around in shallow waters near land as a protection ( just as modern fish ( and amphibians ) often spent the first part of their life in the comparative safety of shallow waters like mangrove forests ), two very different niches partially overlapped each other, with the young juveniles in the diffuse line between.

Before the Grand Canal was rebuilt, grain was transferred to Beijing in two ways ; one route was simply via the East China Sea, from the port of Liujiagang ( near Suzhou ); the other was a far more laborious process of transferring the grain from large to small shallow barges ( after passing the Huai River and having to cross southwestern Shandong ), then transferred back to large river barges on the Yellow River before finally reaching Beijing.

They are most commonly found at shallow depths in tropical waters, but deep water and cold water corals also exist on smaller scales in other areas.

The shallow area behind the rocks was turned into a whale tank via special effects ; other changes included the addition of the San Francisco skyline in the background.

Rayleigh waves, also called ground roll, are surface waves that travel as ripples with motions that are similar to those of waves on the surface of water ( note, however, that the associated particle motion at shallow depths is retrograde, and that the restoring force in Rayleigh and in other seismic waves is elastic, not gravitational as for water waves ).

A prominent computing scientist, E. W. Dijkstra, wrote in a paper that the coining of the term software engineer was not useful since it was an inappropriate analogy, " The existence of the mere term has been the base of a number of extremely shallow — and false — analogies, which just confuse the issue ... Computers are such exceptional gadgets that there is good reason to assume that most analogies with other disciplines are too shallow to be of any positive value, are even so shallow that they are only confusing.

The nest is a raised mound, built by both sexes, of sticks, uprooted grass, and other plant material sited on a small island, standing in shallow water, or occasionally floating.

The shape of the surface becomes concave to balance the centrifugal force against the other forces upon the liquid.

* The superior facets are of large size, oval, concave, and approach each other in front, but diverge behind: they are directed upward, medially, and a little backward, each forming a cup for the corresponding condyle of the occipital bone, and are admirably adapted to the nodding movements of the head.

The Earth – Moon system is unique in that the ratio of the mass of the Moon to the mass of the Earth is much greater than that of any other moon – planet ratio in the Solar System, and the Moon's orbit with respect to the Sun is always concave.

For 1963, the Grand Prix received the same styling changes as other full-sized Pontiacs such as vertical headlights and crisper body lines, but also received its own squared-off roofline with a concave rear window, along with less chrome.

The earliest age of civilization, the " clay age ", is marked by crude, hand-made pottery and thumb-marked bricks-flat on one side, concave on the other, gradually developing through several fairly marked stages.

Typically, one element is a negative ( concave ) element made out of flint glass such as F2, which has relatively high dispersion, and the other is a positive ( convex ) element made of crown glass such as BK7, which has lower dispersion.

This method can be extended ( in theory ) to concave shapes where the centroid lies outside the shape, and to solids ( of uniform density ), but the positions of the plumb lines need to be recorded by means other than drawing.

A 1685 account describes it as being made of boulders simply heaped up on each other: " an immense mass of stone, of a shape of a demi-lune, with a bar in the middle of the concave: no one stone that lies there was ever touched with a tool or bedded in any sort of cement, but all the pebbles of the see are piled up, and held by their bearings only, and the surge plays in and out through the interstices of the stone in a wonderful manner.

Galileo states that he solved the problem of the construction of a telescope the first night after his return to Padua from Venice and made his first telescope the next day by fitting a convex lens in one extremity of a leaden tube and a concave lens in the other one.

* A third type of generator ( DEMG ), developed by Vladimir Chernyshev, is cylindrical, and contains a stack of concave metallic disks, facing each other in pairs, to create hollow modules ( with the number varying according to the desired power ), and separated by explosives ; each module functions as an independent generator.

About 100 metres of 3. 6m-high loose palisading had been hastily erected in a concave shape, blocking the path to the pā, while other defensive works included a long trench 2m wide and 2m deep behind the palisade, as well as hidden rifle pits and three taumaihi, 6m-high towers built of packed soil and ferns.

It resembles a cross section of a swimming pool, essentially two concave ramps ( or quarter-pipes ), topped by copings and decks, facing each other across a flat transition.

The bottom edge ( foot ) of the topsail, like that of other square sails, is slightly concave,.

A building's surface detailing ( indoors or out ) may have a molding with an ogee-shaped profile, consisting ( going from low to high ) of a concave arc flowing into a convex arc, with vertical ends ; if the lower curve is convex and higher one concave, this is known as a Roman ogee, although frequently the terms are used as if they are interchangeable and for a variety of other shapes.

Darkness gathers around, far distant thunder rolls over the trembling hills ; the black clouds with august majesty and power, moves slowly forwards, shading regions of towering hills, and threatening all the destructions of a thunderstorm ; all around is now still as death, not a whisper is heard, but a total inactivity and silence seems to pervade the earth ; the birds afraid to utter a chirrup, and in low tremulous voices take leave of each other, seeking covert and safety ; every insect is silenced, and nothing heard but the roaring of the approaching hurricane ; the mighty cloud now expands its sable wings, extending from North to South, and is driven irresistibly on by the tumultuous winds, spreading his livid wings around the gloomy concave, armed with terrors of thunder and fiery shafts of lightning ; now the lofty forests bend low beneath its fury, their limbs and wavy boughs are tossed about and catch hold of each other ; the mountains tremble and seem to reel about, and the ancient hills to be shaken to their foundations: the furious storm sweeps along, smoaking through the vale and over the resounding hills ; the face of the earth is obscured by the deluge descending from the firmament, and I am deafened by the din of thunder ; the tempestuous scene damps my spirits, and my horse sinks under me at the tremendous peals, as I hasten for the plain.

* Roman tiles-flat in the middle, with a concave curve at one end at a convex curve at the other, to allow interlocking.

A concave setting permits great control for planing large curves, like table sides or chair arms, and the convex works well for chair arms, legs and backs, and other applications.

For 1963, the Grand Prix received revised sheetmetal shared with other full-size Pontiacs, but with its own squared-off roofline with a concave rear window that contrasted with the convertible-like roofline of the 1962 Grand Prix and continued on the 1963 to 1964 Catalina and Bonneville.

While other Pontiac coupes received the semi-fastback rooflines shared with other GM divisions, Grand Prixs retained the exclusive squared-off roofline with concave rear window but a bit more rounded than the 1963-64 version.

In other cases, the smooth, rounded profile typical of a soft-point bullet is preferred over the concave tip of a hollow point, because the latter tends to suffer failure to feed malfunctions in certain magazine-fed firearms.

The processes themselves are slightly concave with a raised anterior edge ( convexly round in other canids ).