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The garganey (Spatula querquedula) is a small dabbling duck.It breeds in much of Europe and across the Palearctic, but is strictly migratory, with the entire population moving to Africa, India (in particular Santragachi), Bangladesh (in the natural reservoirs of Sylhet district) and Australasia during the winter of the Northern hemisphere, [2] where large flocks can occur.
The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.
The tiny (0.6 μm) marine cyanobacterium Prochlorococcus, discovered in 1986, forms today an important part of the base of the ocean food chain and accounts for much of the photosynthesis of the open ocean [140] and an estimated 20% of the oxygen in the Earth's atmosphere. [141]
The eastern bluebird is New York's state bird The following list of birds of New York included the 503 species and a species pair of wild birds documented in New York as of August 2022. Unless noted otherwise, the source is the Checklist of New York State Birds published by the New York State Avian Records Committee (NYSARC) of the New York State Ornithological Association. These species ...
The surface ocean engages in air-sea interactions and absorbs carbon dioxide (CO 2) from the atmosphere, making the ocean the Earth's largest sink for atmospheric CO 2. Carbon dioxide dissolves in and reacts with seawater to form carbonic acid. Subsequent reactions then produce carbonate (CO 3 2−), bicarbonate (HCO 3 −), and hydrogen (H ...
The wreckage of the cruise ship Titanic sits on the ocean floor about 3,800 meters (12,500 feet) below the surface. * Titan weighs 9,525 kg (21,000 lbs), and can travel at a speed of 3 knots (3-1/ ...
Since 1990, over 100 countries have allowed people to eat up to 87 marine mammal species, including Indo-Pacific humpback dolphins [1] Marine mammals are a food source in many countries around the world. Historically, they were hunted by coastal people, and in the case of aboriginal whaling, still are.
The mesopelagic zone occupies about 60% of the planet's surface and about 20% of the ocean's volume, amounting to a large part of the total biosphere. [2] It hosts a diverse biological community that includes bristlemouths , blobfish , bioluminescent jellyfish , giant squid , and a myriad of other unique organisms adapted to live in a low-light ...