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Bythotrephes longimanus, or the spiny water flea, is a planktonic crustacean less than 15 millimetres (0.6 in) long. It is native to fresh waters of Northern Europe and Asia, but has been accidentally introduced and widely distributed in the Great Lakes area of North America since the 1980s. Bythotrephes is typified by a long abdominal spine with several barbs which protect it from predators.

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Caridina multidentata is a species of shrimp in the family Atyidae. It is native to Japan and Taiwan. Its common names include Yamato shrimp, Japanese shrimp, Amano shrimp, and algae shrimp.

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Crangon allmani, also spelled Crangon allmanni, is a species of shrimp in the genus Crangon. It is at home in the northeast Atlantic Ocean. Its specific name, allmani, honours the Irish natural historian George J. Allman. According to J. A. Allen, the spelling allmanni is a writing error and the correct spelling is allmani.

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Daphnia pulex is the most common species of water flea. It has a cosmopolitan distribution: the species is found throughout the Americas, Europe and Australia. It is a model species, and was the first crustacean to have its genome sequenced.

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The gulf ghost crab, Hoplocypode occidentalis, is a species of ghost crabs native to the Pacific coast of the Americas, from the Gulf of California to Colombia. It is the only species in the genus Hoplocypode. Gulf ghost crabs are medium-sized, reaching a maximum overall body diameter of 6 in (15 cm). They are one of only two ghost crab species found in the eastern Pacific. However, gulf ghost crabs can easily be distinguished from painted ghost crabs by the absence of "horns" on their eyes.

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Johngarthia planata, sometimes known as the Clipperton crab, is a bright orange species of land crab that lives on Clipperton Island in the eastern Pacific; on Malpelo Island, west of Colombia; and on Socorro Island in the Revillagigedo Islands off Mexico, 900 km north of Clipperton. It is omnivorous and feeds on seaweed (algae), vegetation and sometimes carrion.

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Lophopanopeus bellus, the black-clawed crab, is a species of crab in the family Panopeidae. It is native to the Pacific coasts of North America, its range extending from Alaska to California.

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Oedignathus inermis is a species of king crab found off the Pacific coasts of the United States and Canada, from California to Alaska, and disjunctly around the coasts of Japan. It is the only species in the genus Oedignathus, and is sometimes called the granular claw crab, paxillose crab or tuberculate nestling lithode crab.

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Palaemon pacificus is a species of shrimp of the family Palaemonidae.

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Pleuroncodes planipes, sometimes called the pelagic red crab, tuna crab or langostilla, is a species of squat lobster from the eastern Pacific Ocean.

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Trachysalambria curvirostris is a species of prawn that lives in shallow waters of the Indo-West Pacific. It is one of the most important species targeted by prawn fishery, with annual harvests of more than 300,000 t, mostly landed in China.