It is thought by some that the channels in the Black Sea were formed around 6, 000 years ago when sea levels were approaching their current point.

Cross-section of the Irish Sea through Man, showing sea levels.

Sea levels began to rise during the Jurassic, which was probably caused by an increase in seafloor spreading.

During this period the southern Red Sea ’ s levels dropped and was only 2. 5 miles or 4 km wide.

Sea levels in the Permian remained generally low, and near-shore environments were limited by the collection of almost all major landmasses into a single continent -- Pangaea.

Sea levels had dropped coincident with the ice age, but slowly recovered over the course of the Silurian and Devonian.

This provided less natural dilution of Mediterranean salinity and ended the higher levels of natural turbidity, additionally making conditions more like those in the Red Sea.

Environment-current issues: inadequate sanitation facilities ; increasing levels of soil salinity ; industrial pollution ; excessive pesticides ; part of the basin of the shrinking Aral Sea suffers from severe overutilization of available water for irrigation and associated pollution

In 2003, ICES stated there is a high risk of stock collapse if then current exploitation levels continued, and recommended a moratorium on catching Atlantic cod in the North Sea during 2004.

Sea levels have been lower and higher than at present, resulting in significant changes to the coastline during this period.

Sea levels rise abruptly and massive inland flooding occurs due to glacier melt.

Water consumption is so high that groundwater levels in the Sanaa basin are diminishing ; because of this, government officials have proposed relocating large portions of the population of Sana ' a to the coast of the Red Sea.

Opposition came from fishermen along the Zuiderzee who would lose their livelihood, and from others in coastal areas along the more northerly Wadden Sea who feared higher water levels as a result of the closure, and others who doubted whether it was financially practical.

The main dungeon in Slash ' EM is much larger than in NetHack, introducing special levels such as the Sunless Sea, where a magic lamp lies, and the Guild of Disgruntled Adventurers, populated by " player monsters " ( archaeologists, barbarians, and the like ).

A Thames Barrier flood defence closure is triggered when a combination of high tides forecast in the North Sea and high river flows at the tidal limit at Teddington weir indicate that water levels would exceed in central London.

Bombay Beach is located on the east shore of the Salton Sea and, like many communities along its shores, has had to contend with rising and falling water levels.

Throughout the 1980s and 1990s, as salinity and suspected pollution levels in the Salton Sea increased, the attraction of the Salton Sea as a recreational destination diminished.

Water levels rose and the western Tethys came to shallowly cover significant portions of Europe, forming the ( first ) Tethys Sea.

Whilst the lower reaches of the River Havel provide the most direct route to Hamburg and the North Sea ports, variable water levels in the River Elbe affect those in the lower River Havel, and together these can restrict navigation.

The current channel of the Great Belt was created by a relatively high fresh water phase of the rising Yoldia Sea breaking through to the lower Kattegat levels at about 10, 000 BP.

At the end of that time rising Kattegat levels broke into the Ancylus lake, creating the Littorina Sea.

The " Century Flood " of 1976 and the " North Frisian Flood " of 1981 brought the highest water levels measured to date on the North Sea coast, but because of sea defences such as improved warning systems and dikes built and modified after the flood of 1962, these led only to property damage.

Sea level rise may also contribute to accretion, as material is pushed up with rising sea levels.

While serving as First Sea Lord, his primary concerns dealt with devising plans on how the Royal Navy would keep shipping lanes open if Britain fell victim to a nuclear attack.

The 2002 " Declaration on the Conduct of Parties in the South China Sea " eased tensions but fell short of a legally binding code of conduct desired by several of the disputants.

During this period Port Moresby, especially its " villages ", fell into disrepair as the Fifth Air Force under General George Kenney " pushed his bomber line forward 1800 miles " rapidly establishing no less than five air bases around the sparsely populated town, and troops from a variety of nations under MacArthurs ' direction transited through the vicinity ; which became a major allied staging base feeding men and material forward from Brisbane, Australia which lies 1, 800 miles across the Coral Sea and about six hours away by B-17 bomber or C-47 transport.

The ridge fell under German control in October 1914 during the Race to the Sea as the Franco-British and German forces continually attempted to outflank each other through northeastern France.

* Adie v Fennilitteau ( 1 Cox, 24 ) by the Lords Commissioners Lord Loughborough, Ashhurst, and Hotham, in April 1783, a trustee laid out trust money in South Sea annuities ; they afterwards fell in their price, and though it was in the same fund in which the greatest part of the testator's personal estate was at his death invested, their Lordships held it to be an improper investment ; and that the trustee should abide the loss.

Helle, though, did look down, and fell off the ram into the Hellespont ( which was named after her, meaning Sea of Helle ) and drowned, but Phrixus survived all the way to Colchis, where King Aeetes took him in and treated him kindly, giving Phrixus his daughter, Chalciope, in marriage.

Helle fell off the ram into the Hellespont ( which was named after her, meaning Sea of Helle ) and drowned, but Phrixus survived all the way to Colchis, where King Aeetes took him in and treated him kindly, giving Phrixus his daughter, Chalciope, in marriage.

Icarus kept flapping his wings but soon realized that he had no feathers left and that he was only flapping his bare arms, and so Icarus fell into the sea in the area which today bears his name, the Icarian Sea near Icaria, an island southwest of Samos.

In the wake of the Athenian defeat in Sicily, revolts began to break out among Athens ' subject states in the Aegean Sea and the Peace of Nicias fell apart ; the Peloponnesian War resumed in full by 412 BC.

The Rhine ( as the Urstrom ) flowed northwards into the North Sea as the sea level fell during the start of the first of the Pleistocene Ice Ages.

The story of one survivor can be read in “ ABANDONED AND FORGOTTEN: An Orphan Girl's Tale of Survival in World War II by Evelyne Tannehill ,” in which Evelyne and her family fell victim to the Russians who invaded her parents ' farm by the Baltic Sea in East Prussia.

By the early November the Barbara Line on the Tyrrhenian Sea side of the Apennine Mountains had been breached by U. S. 5th Army, and the Germans fell back to the Bernhardt Line.

North Korea alarmed Japan in 1993 by launching a test missile towards Honshū, although the missile fell harmlessly into the Sea of Japan.

With the political unification of the Mediterranean Sea in the 2nd and 1st centuries BC, naval artillery fell out of use.

A legend, quoted by Photius, claims that Artemisia fell in love with a man named Dardanus, and when he ignored her, an oracle told her to jump to her death into the Aegean Sea from the rock of Leucas.

The crusade soon fell under Venetian control, and was diverted to Zara on the Adriatic Sea.

Tephra fell over most of the South China Sea and ashfall was recorded as far away as Vietnam, Cambodia and Malaysia.

The burial of algae and bacteria below the mud of the sea floor during this time resulted in the formation of North Sea oil and natural gas, much of it trapped in overlying sandstone by salt deposits formed as the sea levels fell to form the swamps and salty lakes and lagoons that were home to dinosaurs.

After initially stating that the Crimean port of Sevastopol could be held for a long time even if Crimea fell, he changed his mind and managed to persuade Hitler to authorize a retreat from the Black Sea port.

Sea otters, whose numbers were once estimated at 150, 000 – 300, 000, were hunted extensively for their fur between 1741 and 1911, and the world population fell to 1, 000 – 2, 000 individuals living in a fraction of their historic range.

After receiving a first-round bye for the playoffs, the Stingrays fell in a second-round 3-game shutout to the Mississippi Sea Wolves.

While the Hittite empire fell to the Sea Peoples during the Bronze Age collapse, Carchemish survived the Sea People's attacks to continue to be the capital of an important Neo-Hittite kingdom in the Iron Age, and a trading center.

As soon as he beheld the South Sea stretching in endless prospect below him, he fell on his knees, and lifting up his hands to Heaven, returned thanks to God, who had conducted him to a discovery so beneficial to his country, and so honourable to himself.