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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 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 ...
Astronomers discovered the celestial objects in a star-forming nebula, or a cloud of gas and dust, named NGC 1333. The nebula is located 960 light-years away within a larger region of gas and dust ...
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 ...
The seamount chain provides a unique habitat for deep sea marine creatures. Coral formations grow on the rocky outcrops, resembling underwater forests that provide shelter for invertebrates and fish. [6] Due to the expense and difficulties of studying the deep ocean, little was known of the creatures that inhabited the New England Seamounts.
A shipwreck is the remains of a ship that has been wrecked, found either on land, beached, or sunken at the bottom of the sea. The United Nations Educational, Scientific and Cultural Organization estimated that over 3 million shipwrecks are spread across the ocean floors. [17]