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Powered by. There are actually more than seven seas in the world. But what makes a sea different from other bodies of water? That is not an easy question to answer, because the definition of a sea leaves some room for interpretation. In general, a sea is defined as a portion of the ocean that is partly surrounded by land. Given that definition, there are about 50 seas around the world. But that number includes water bodies not always thought of as seas, such as the Gulf of Mexico and the Hudson Bay.

Moreover, in some cases, a sea is completely landlocked.

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Other seas surrounded by land include the Aral Sea and the Dead Sea. They contain saltwater and have been called seas for many years, but many oceanographers and geographers are more inclined to call them lakes.

Still, that leaves dozens of water bodies that fit the traditional definition of a sea, even though they can be quite different from one another. A sea can be more than 2. Or, it can be as tiny as the Sea of Marmara, which is less than 12, square kilometers 5, square miles in area. A sea can also be very warm for most of the year. The Red Sea, for instance, has an average temperature of around 30 degrees Celsius 86 degrees Fahrenheit. It is also the saltiest sea, containing 41 parts of salt per 1, parts of seawater.

Seas can be quite cold, too. The Greenland Sea, for instance, has surface water that hovers near the freezing mark most of the year. It contains a unique mixture of saltwater and freshwater, making it the largest brackish water body on the planet.

As a result, the Baltic Sea contains a small, but rare, variety of freshwater and saltwater plants and animals that have been able to adapt to their brackish environment. She was part of the crew aboard the exploration vessel Nautilusa ship that shared its scientific discoveries in the Mediterranean Sea, the Black Sea, and elsewhere with students around the world in online lessons and chats.Join our early testers!

See how your sentence looks with different synonyms. Had the dead come back from the bottom of the sea to expose him? He, too, plunged into the sea, and Bunsby and the captain were left alone. The two bent their steps to the shore, and looked out to sea. Then they launched the ship's boat, in which Bates had come to the island, and put out to sea.

He thought I was at the bottom of the sea, and the receipt with me. It seemed like one risen from the dead, for he supposed him lying at the bottom of the sea. He came home with me, and, far from having perished at sea, is now alive and well. The immense pools in the Phillips were as salt as sea water. We camped near the sea, a few miles to the westward of Cape Pasley. Neptunian abyssal aquatic coastal deep-sea hydrographic littoral maritime natatorial nautical naval navigational ocean-going oceanic oceanographic pelagic saltwater sea seafaring seagoing seashore seaside shore.

Neptunian abyssal aquatic coastal deep-sea hydrographic littoral maritime natatorial nautical naval navigational oceangoing oceanic oceanographic of the sea pelagic saltwater sea seafaring seagoing seashore seaside shore.

Emoji Challenge! Test Yourself!To save this word, you'll need to log in. Send us feedback. See more words from the same century From the Editors at Merriam-Webster. What's the Difference Between a 'Boat' What's the Difference Between a 'Boat' and a 'Ship'? And which one holds the gravy? Accessed 18 Jul. Keep scrolling for more More Definitions for sea sea. Please tell us where you read or heard it including the quote, if possible. Name that color: chartreuse aqua orange wisteria Can you spell these 10 commonly misspelled words?

Test Your Knowledge - and learn some interesting things along the way. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! It depends on what you base your decision. And who put it there, anyway? Literally How to use a word that literally drives some people nuts.

Is Singular 'They' a Better Choice? Additional colors! More obscure than before! Test your knowledge of words related to the season of longer days and vacations. Can you spell these 10 commonly misspelled words?Suggest new definition.

References in classic literature?


One day, when a fearful storm raged far and wide, and the Spirits saw great billows rolling like heavy clouds above their heads, and heard the wild winds sounding far away, down through the foaming waves a little child came floating to their home; its eyes were closed as if in sleep, the long hair fell like sea-weed round its pale, cold face, and the little hands still clasped the shells they had been gathering on the beach, when the great waves swept it into the troubled sea.

View in context. My father, who was very ancient, had given me a competent share of learning, as far as house-education and a country free school generally go, and designed me for the law; but I would be satisfied with nothing but going to sea ; and my inclination to this led me so strongly against the will, nay, the commands of my father, and against all the entreaties and persuasions of my mother and other friends, that there seemed to be something fatal in that propensity of nature, tending directly to the life of misery which was to befall me.

Yet Sea Catch never chased a beaten seal, for that was against the Rules of the Beach. The right hemisphere, "dedicated to the ladies," encloses smaller seaswhose significant names contain every incident of a feminine existence. Here, though the weather was calm, we found the sea so rough, that we were tossed as in a high wind for two nights; whether this violent agitation of the water proceeded from the narrowness of the strait, or from the fury of the late storm, I know not; whatever was the cause, we suffered all the hardships of a tempest.

As for the day time, he spent it on the rocks and on the sea shore, weeping, crying aloud for his despair, and always looking out upon the sea. I watched the sea. Nothing on the horizon, till about four o'clock a steamer running west on our counter. In Europe, the most southern glacier which comes down to the sea is met with, according to Von Buch, on the coast of Norway, in lat.

I remember one beautiful day, when the boats left early and the reports of the hunters' guns grew dim and distant and died away as they scattered far and wide over the sea. There was just the faintest wind from the westward; but it breathed its last by the time we managed to get to leeward of the last lee boat. It is like the message of reprieve from the sentence of sorrow suspended over many a home, even if some of the men in her have been the most homeless mortals that you may find among the wanderers of the sea.

Ghost Galaxies

Acronyms browser? Full browser?It has been travelled and explored since ancient times, while the scientific study of the sea— oceanography —dates broadly from the voyages of Captain James Cook to explore the Pacific Ocean between and The word sea is also used to denote smaller, partly landlocked sections of the ocean and certain large, entirely landlocked, saltwater lakessuch as the Caspian Sea and the Dead Sea.

The most abundant solid dissolved in seawater is sodium chloride.


The water also contains salts of magnesiumcalciumand potassiumamongst many other elements, some in minute concentrations. Salinity varies widely, being lower near the surface and the mouths of large rivers and higher in the depths of the ocean; however, the relative proportions of dissolved salts varies little across the oceans. Winds blowing over the surface of the sea produce waveswhich break when they enter shallow water.

Winds also create surface currents through friction, setting up slow but stable circulations of water throughout the oceans. The directions of the circulation are governed by factors including the shapes of the continents and Earth's rotation the Coriolis effect.

Deep-sea currents, known as the global conveyor beltcarry cold water from near the poles to every ocean. Tidesthe generally twice-daily rise and fall of sea levelsare caused by Earth's rotation and the gravitational effects of the orbiting Moon and, to a lesser extent, of the Sun.

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Tides may have a very high range in bays or estuaries. Submarine earthquakes arising from tectonic plate movements under the oceans can lead to destructive tsunamisas can volcanoes, huge landslides or the impact of large meteorites.

A wide variety of organismsincluding bacteriaprotistsalgaeplants, fungi, and animals, live in the sea, which offers a wide range of marine habitats and ecosystemsranging vertically from the sunlit surface and shoreline to the great depths and pressures of the cold, dark abyssal zoneand in latitude from the cold waters under polar ice caps to the colourful diversity of coral reefs in tropical regions.

Many of the major groups of organisms evolved in the sea and life may have started there. The sea provides substantial supplies of food for humans, mainly fishbut also shellfishmammals and seaweedwhether caught by fishermen or farmed underwater. Other human uses of the sea include tradetravel, mineral extractionpower generationwarfareand leisure activities such as swimmingsailingand scuba diving.

Many of these activities create marine pollution. The sea is important in human culture, with major appearances in literature at least since Homer 's Odysseyin marine artin cinema, in theatre and in classical music. Symbolically, the sea appears as monsters such as Scylla in mythology and represents the unconscious mind in dream interpretation.

The sea is the interconnected system of all the Earth's oceanic waters, including the AtlanticPacificIndianSouthern and Arctic Oceans. There is no sharp distinction between seas and oceansthough generally seas are smaller, and are often partly as marginal seas or wholly as inland seas bordered by land.A momentum shift in the market pushed the e-commerce and digital gaming platform lower for the second day in a row. Indonesian startup Bukalapak, backed by Chinese fintech Ant Group, aims to turn the mom-and-pop stores that use its B2B e-commerce platform into banking agents through a partnership with one of the country's largest lenders, its CEO told Reuters.

Bukalapak, or 'open store', will introduce grocery sellers and street vendors - known as 'warungs' - to a service from PT Bank Mandiri Persero Tbk through which warungs can help often smartphone-less locals set up bank accounts.

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