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Crustaceans known as “shrimp” typically have elongated bodies and engage in swimming as their primary mode of locomotion. These crustaceans belong to the orders Caridea and Dendrobranchiata of the decapod order; however, the term “shrimp” is also used to refer to crustaceans that do not belong to this order.
Some classifications might be narrowed down to include just Caridea, only the more specialised species in each group, or only the marine species. In the context of a more inclusive meaning, the term “prawn” may be used interchangeably with “shrimp.” Both terms refer to swimming crustaceans with stalk-like eyes, long, thin muscular tails (abdomens), long whiskers (antennae), and slender legs. It is common practise to refer to as a shrimp any little crustacean that resembles a shrimp. They propel themselves forward by paddling with swimmerets located on the bottom of their abdomens. However, their escape reaction is often many flicks with the tail, which cause them to move extremely swiftly in the opposite direction. The walking legs of crabs, lobsters, and shrimp are far more robust than the legs of shrimp, which are much more delicate and are largely used for perching.
Shrimp are found in many places and in large numbers. There are an incredible number of species that have evolved to live in a variety of environments. In the majority of coastlines and estuaries, as well as in rivers and lakes, you may find them feeding close to the bottom of the water. Some marine life may lift itself off the bottom and dive down into the silt when it needs to get away from a predator. They may survive anywhere from one to seven years on average. Even though they often congregate in enormous groups during the breeding season, shrimp are mostly solitary creatures.
They are an essential component of the food chain and a crucial source of nutrition for bigger species such as whales, fish, and everything in between. It is common practise to catch and raise shrimp specifically for the purpose of eating their meaty tails, which may be found on many species of shrimp. The commercial shrimp business generates an annual revenue of 50 billion dollars, and in 2010, the total commercial output of shrimp was over 7 million tonnes. Commercial shrimp species are responsible for this revenue. During the 1980s, shrimp farming became increasingly common, notably in China. By 2007, the harvest from shrimp farms had surpassed the catch of wild shrimp for the first time. When shrimp are taken from the wild, there is a major risk of causing an excessive amount of bycatch, and when estuaries are utilised to support shrimp farming, there is a risk of causing pollution harm to the estuaries. Some shrimp species may grow to lengths of over 25 centimetres, contrary to the common perception that shrimp are only approximately 2 centimetres (0.79 in) long (9.8 in). Larger shrimp are more likely to be targeted economically, and they are often referred to as prawns, especially in countries that were once a part of the Commonwealth of Nations and in former British colonies.