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Sometimes a small tank and additional pouches are included. Developed in the United States in 1957 1 by Harold von Braunhut, they are sold as eggs intended to be added to water, and almost always come bundled in a kit of three pouches and instructions. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Sea-Monkeys is a marketing term for brine shrimp ( Artemia) sold as novelty aquarium pets. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.