Spiders eat 400-800 million tons of prey every year. With more than 45,000 species and a population density of up to 1,000 individuals per square meter, spiders are one of the world's most species-rich and widespread groups of predators.

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Spiders eat 400-800 million tons of prey every year. With more than 45,000 species and a population density of up to 1,000 individuals per square meter, spiders are one of the world's most species-rich and widespread groups of predators.