Crustaceans

... - Kingdom Protoctista o 1,250,000 animals, including (Kingdom Animalia): + 1,203,375 invertebrates: # 950,000 insects, # 81,000 mollusks, # 40,000 crustaceans, # 2,175 corals, # 130,200 others; + 59,811 vertebrates (Phylum Chordata): # 29,300 fish, # 6,199 amphibians, # 8,240 reptiles, # 9,956 ...

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... - Kingdom Protoctista o 1,250,000 animals, including (Kingdom Animalia): + 1,203,375 invertebrates: # 950,000 insects, # 81,000 mollusks, # 40,000 crustaceans, # 2,175 corals, # 130,200 others; + 59,811 vertebrates (Phylum Chordata): # 29,300 fish, # 6,199 amphibians, # 8,240 reptiles, # 9,956 ...

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... is Chordata, which contains all animals with backbones (fish, birds, mammals, reptiles, amphibians). There is also Arthropoda (insects, spiders, crustaceans); Mollusca (snails, squid, clam); Annelida (segmented worms); Echinodermata (starfish, sea urchins) and many, many more. http://en.wikipedia.org/wiki/Species ...

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... is Chordata, which contains all animals with backbones (fish, birds, mammals, reptiles, amphibians). There is also Arthropoda (insects, spiders, crustaceans); Mollusca (snails, squid, clam); Annelida (segmented worms); Echinodermata (starfish, sea urchins) and many, many more.

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Sometimes hemolymph does carry oxygen - in crustaceans and marine arthropods, it's fairly common. In insects, which often have relatively high metabolisms, an open circulatory system just isn't efficient enough for oxygen distribution all by itself. ...

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