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Map of the lake. 1898 or 1899 photo showing the waterfall Bøsdalafossur. The lake is located very close to the ocean, but its surface is about 40 m (130 ft) above the level of the sea. It is surrounded by a higher cliff which prevents it from emptying fully into the ocean, the waterfall Bøsdalafossur being the outlet.
t. e. A seamount is a large submarine landform that rises from the ocean floor without reaching the water surface (sea level), and thus is not an island, islet, or cliff -rock. Seamounts are typically formed from extinct volcanoes that rise abruptly and are usually found rising from the seafloor to 1,000–4,000 m (3,300–13,100 ft) in height.
Lake Baikal is in a rift valley, created by the Baikal Rift Zone, where the Earth's crust is slowly pulling apart. [5] At 636 km (395 mi) long and 79 km (49 mi) wide, Lake Baikal has the largest surface area of any freshwater lake in Asia, at 31,722 km 2 (12,248 sq mi), and is the deepest lake in the world at 1,642 metres (5,387 feet; 898 fathoms).
Hanging valley – A tributary valley that meets the main valley above the valley floor; High valley – Valley in the upper third of a mountain range; Moraine – Glacially formed accumulation of debriss; Ribbon Lake – Long and narrow, finger-shaped lake, usually found in a glacial trough; Side valley – Valley with a tributary to a larger ...
Diel vertical migration (DVM), also known as diurnal vertical migration, is a pattern of movement used by some organisms, such as copepods, living in the ocean and in lakes. The adjective "diel" (IPA: / ˈdaɪ.əl /, / ˈdiː.əl /) comes from Latin: diēs, lit. 'day', and refers to a 24-hour period. The migration occurs when organisms move up ...
Marine ecosystems are the largest of Earth 's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply [1][2] and 90% of habitable ...
The pelagic zone refers to the open, free waters away from the shore, where marine life can swim freely in any direction unhindered by topographical constraints. The oceanic zone is the deep open ocean beyond the continental shelf, which contrasts with the inshore waters near the coast, such as in estuaries or on the continental shelf. Waters ...
Marine sediment. v. t. e. The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'. The structure of the seabed of the global ocean is governed by plate tectonics. Most of the ocean is very deep, where the seabed is known as the abyssal plain.