Blue Marble Next Generation Images from Terra/MODIS

The Caspian Sea is the largest enclosed body of water on Earth by area. It has a surface area of 371,000 square kilometers (143,244 sq mi) and a volume of 78,200 cubic kilometers (18,761 cu mi). It has a salinity of approximately 1.2%, about a third the salinity of most seawater.

View the Mediterranean Sea, Aegean Sea, Adriatic Sea, Baltic Sea, Dead Sea, Caspian Sea, Aral Sea, Red Sea, and the Persian Gulf.

The outline of North America is exceedingly irregular; some extensive coastal reaches are relatively smooth, but by and large the coastline is broken and embayed, with many prominent offshore islands. The continent has three enormous coastal indentations: Hudson Bay in the northeast, the Gulf of Mexico in the southeast, and the Gulf of Alaska in the northwest.

This image of the Mediterranian Sea shows that this inland sea is bordered on the north by Europe, the east by Asia, and in the south by Africa. This 969,100 sq. mile body of water is approximately 2,300 miles in length, and has a maximum depth of 16,896 ft. Major subdivisions include the Adriatic Sea, Aegean Sea, Balearic Sea, Tyrrhenian Sea, Ionian Sea and Ligurian Sea.

South America, the planet's 4th largest continent, includes (12) countries and (3) major territories. It contains the massive Amazon River and surrounding basin - the largest tropical rain forest in the world; the toothy-edged Andes Mountains, that stretch the entire length of the continent, and some of the most diverse and spectacular landforms on the planet.

This image shows the 3 regions in North Africa: The Sahara, the Sahel, and the Sudan. The Sahel, a word derived from the Arabic 'sahil' meaning shore, is a semi-arid belt of barren, sandy and rock-strewn land which stretches 3,860km across the breadth of the African continent and marks the physical and cultural divide between the continent's more fertile south (the Sudan Region) and Saharan desert north.

This image contains a view of the United States, Canada, and Greenland.

Europe, the planet's 6th largest continent includes 47 countries and assorted dependencies and territories.

The European continent is separated from Asia by Russia's Ural Mountains, and the Caspian and Black Seas.

This image shows the Arctic. The North Pole is in the middle of the Arctic Ocean. The Arctic Ocean is surrounded by Alaska, Canada, Greenland, and Russia. The ocean is 4000 meters deep. Although it is an ocean, it is water you can walk on. There are 2-3 meter thick ice floes floating on the water at the North Pole. In summer the temperatures are near 0 centigrade and there is light. In winter the temperature is about -30 centigrade and it is dark.

North Africa is the northernmost region of the African continent, separated by the Sahara from Sub-Saharan Africa.The Atlas Mountains, which extend across much of Morocco, northern Algeria and Tunisia, are part of the fold mountain system which also runs through much of Southern Europe.

This image is of North Africa, Europe, The Middle East, and India.