Predating a

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Sometimes predator and prey find themselves in an evolutionary arms race, a cycle of adaptations and counter-adaptations.

Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey.Other adaptations include stealth and aggressive mimicry that improve hunting efficiency.Predation has a powerful selective effect on prey, and the prey develop antipredator adaptations such as warning coloration, alarm calls and other signals, camouflage, mimicry of well-defended species, and defensive spines and chemicals.Among freshwater and marine zooplankton, whether single-celled or multi-cellular, predatory grazing on phytoplankton and smaller zooplankton is common, and found in many species of nanoflagellates, dinoflagellates, ciliates, rotifers, a diverse range of meroplankton animal larvae, and two groups of crustaceans, namely copepods and cladocerans.The predator must decide where to look for prey based on its geographical distribution; and once it has located prey, it must assess whether to pursue it or to wait for a better choice.

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