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The Yonaguni Monument (Japanese: 与那国島海底地形, Hepburn: Yonaguni-jima Kaitei Chikei, lit. ' Yonaguni Island Submarine Topography '), also known as the Yonaguni (Island) Submarine Ruins (与那国（島）海底遺跡, Yonaguni(-jima) Kaitei Iseki), is a submerged rock formation off the coast of Yonaguni, the southernmost of the Ryukyu Islands, in Japan.
A tetrapod is a form of wave-dissipating concrete block used to prevent erosion caused by weather and longshore drift, primarily to enforce coastal structures such as seawalls and breakwaters. Tetrapods are made of concrete , and use a tetrahedral shape to dissipate the force of incoming waves by allowing water to flow around rather than ...
One of the main goals of the four-fold expansion of the Papahānaumokuākea Marine National Monument was to promote the conservation of marine biodiversity in the U.S. EEZ. Scientific studies have shown that underwater mountains, or seamounts, are rich in biodiversity as they provide a structure for animals to live on. [7]
The archaeologists found heaps of stone blocks resting on the sandy bottom at least 14 feet below the water’s surface. Near there, experts also located what is likely a funerary monument dating ...
In 1982, the United Nations Convention on the Law of the Sea (UNCLOS) was developed to govern the deep-sea beds vis-à-vis increasing commercial exploitation of sunken objects. [10] In light of the emergence of newly independent states, a need was created for an international legal body that would help protect underwater cultural goods, in ...
The Northeast Canyons and Seamounts Marine National Monument is located within the New England and mid-Atlantic regions, 130 miles southeast of Cape Cod. [1] It comprises a total area of 4,913 square miles, [1] and protects four underwater seamounts (Bear, Mytilus, Physalia, and Retriever Seamounts) and three submarine canyons in the edge of the continental shelf (Oceanographer, Lydonia, and ...
The earliest phase of the seaway began in the mid-Cretaceous when an arm of the Arctic Ocean transgressed south over western North America; this formed the Mowry Sea, so named for the Mowry Shale, an organic-rich rock formation. [1] In the south, the Gulf of Mexico was originally an extension of the Tethys Ocean. In time, the southern embayment ...
Contributing between 1 and 10% of total ocean primary productivity, 200 species of coccolithophores live in the ocean, and under the right conditions they can form large blooms. These large bloom formations are a driving force for the export of calcium carbonate from the surface to the deep ocean in what is sometimes called “Coccolith rain”.