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The oscar (Astronotus ocellatus) is a species of fish from the cichlid family known under a variety of common names, including tiger oscar, velvet cichlid, and marble cichlid. [2] In tropical South America, where the species naturally resides, A. ocellatus specimens are often found for sale as a food fish in the local markets.
Some burrowing species from the genera Astropecten and Luidia have points rather than suckers on their long tube feet and are capable of much more rapid motion, "gliding" across the ocean floor. The sand star ( Luidia foliolata ) can travel at a speed of 2.8 m (9 ft 2 in) per minute. [ 21 ]
The "snowflakes" grow over time and may reach several centimetres in diameter, travelling for weeks before reaching the ocean floor. However, most organic components of marine snow are consumed by microbes , zooplankton and other filter-feeding animals within the first 1,000 metres of their journey, that is, within the epipelagic zone.
Aquaculture has been the fastest growing food sector in the world for decades, and people now eat more farmed fish than wild fish. The industry has had to grow. Demand for seafood is soaring and ...
This fish can range up to 1.5 m (4.9 ft) and weigh 7 kg (15 lb). [77] Seahorses and allies (Syngnathiformes) The largest of this diverse order is the red cornetfish (Fistularia petimba), a long, thin species found in all tropical oceans. This fish can reach a length of 2 m (6.6 ft) and a weight of 4.65 kg (10.3 lb). [77]
Marine biogenic calcification is the production of calcium carbonate by organisms in the global ocean.. Marine biogenic calcification is the biologically mediated process by which marine organisms produce and deposit calcium carbonate minerals to form skeletal structures or hard tissues.
Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...
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