| English | German |
| blue African lily | afrikanische Lilie (Agapanthus) |
| blue and red shrimp | afrikanische Tiefseegarnele (Aristeus antennatus) |
| blue-billed firefinch | dunkelroter Amarant (Lagonosticta rubricata) |
| blue-billed weaver | Rotbrust-Samenknacker (Spermophaga haematina) |
| blue butterfish | Deckfisch (Stromateus fiatola) |
| blue-checked bee-eater | Blauwangenspint (Merops superciliosus) |
| blue-checked bee-eater | persischer Bienenfresser (Merops superciliosus) |
| blue-checked bee-eater | Blauwangenbienenfresser (Merops superciliosus) |
| blue crab | blaue Schwimmkrabbe (Callinectes sapidus) |
| blue duiker | Blauboeckchen (Cephalophus monticola) |
| blue duiker | Blauboeck (Cephalophus monticola) |
| blue-eared glossy starling | lamprocolius chalybaeus (Lamprocolius chalybaeus, lamprocolius chalybaeus) |
| blue-eared glossy starling | Gruenschwanzglanzstar (Lamprocolius chalybaeus, lamprocolius chalybaeus) |
| blue-fish | Magerfisch (Pomatomus saltator, Pomatomus saltatrix, Temnodon saltator) |
| blue-fish | Blaufisch (Pomatomus saltator, Pomatomus saltatrix, Temnodon saltator) |
| blue fleabane | scharfes Berufkraut (Erigeron acer L.) |
| blue flycatcher | elminia longicauda (Elminia longicauda, elminia longicauda) |
| blue flycatcher | Elminie (Elminia longicauda, elminia longicauda) |
| blue-green algae | Zyanophyzeen |
| blue grenadier | Neuseeländischer Grenadier (Macruronus novaezealandiae) |
| blue grenadiers | Grenadierfische (Macruronus spp.) |
| blue hare | Schneehase (Lepus timidus) |
| blue hare | Gebirgshase (Lepus timidus) |
| blue-headed wagtail | Schafstelze (Motacilla flava flava) |
| blue-headed wagtail | Kuhstelze (Motacilla flava flava) |
| blue-headed wood dove | Maidtaube (Calopelia brehmeri, Calopelia puella, Turtur brehmeri) |
| blue jack mackerel | blaue Bastardmakrele (Trachurus picturatus) |
| blue legs | Zauberpilz (Psilocybe cubensis, Psilocybe cubensis, Psilocybe semilanceata, psilocybe) |
| blue legs | Psilocybin (Psilocybe cubensis, Psilocybe cubensis, Psilocybe semilanceata, psilocybe) |
| blue legs | Magic mushroom (Psilocybe cubensis, Psilocybe cubensis, Psilocybe semilanceata, psilocybe) |
| blue mussel | Pfahlmuschel (Mytilus edulis) |
| blue-naped mousebird | colius macrourus (Colius macrourus, colius macrourus) |
| blue-naped mousebird | Blaunacken-Mausvogel (Colius macrourus, colius macrourus) |
| blue-naped parrot | Blauscheitelpapagei (Tanygnathus lucionensis) |
| blue-necked ostrich | struthio camelus molybdophanes (Struthio camelus molybdophanes, struthio camelus molybdophanes) |
| blue-necked ostrich | Somalistrauss (Struthio camelus molybdophanes, struthio camelus molybdophanes) |
| blue rock thrush | Blaumerle (Monticola solitarius) |
| blue shark | Blauhai (Carcharhinus glaucus, Carcharias glaucus, Prionace glauca, Squalus glaucus) |
| blue spruce gall aphid | Douglasienwollaus (Adelges cooleyi, Chermes cooleyi, Chermes oweni, Gillettea cooleyi, Gilletteella cooleyi) |
| blue spruce gall aphid | Wollaus (Adelges cooleyi, Chermes cooleyi, Chermes oweni, Gillettea cooleyi, Gilletteella cooleyi) |
| blue spruce gall aphid | Douglasienlaus (Adelges cooleyi, Chermes cooleyi, Chermes oweni, Gillettea cooleyi, Gilletteella cooleyi) |
| blue-throated conure | Blaulatzsittich (Pyrrhura cruentata) |
| blue-throated curassow | Schakuhuhn (Pipile pipile pipile) |
| blue tit | Blaumeise (Cyanistes caeruleus, Parus caeruleus) |
| blue whale | Blauwal (Balaenoptera musculus) |
| blue willow beetle | kleiner blauer Weidenblattkaefer (Phratora vulgatissima, Phyllodecta vulgatissima) |
| blue willow beetle | kleiner blauer Korbweidenblattkaefer (Phratora vulgatissima, Phyllodecta vulgatissima) |
| blue-winged pitta | japanischer Neunfarbenpitta (Pitta brachyura nympha) |
| blue-winged teal | Blauflügelente (Anas discors) |
| Indo-Pacific blue marlin | Indo-pazifischer Blauer Marlin (Makaira mazara) |
| indophenol blue method | Indophenolblaumethode |
| Kentucky blue grass | Wiesenrispengras (Poa pratensis) |
| little blue heron | Blaureiher (FLorida caerulea, Hydranassa caerulea) |
| little blue macaw | Spix Blauara (Cyanopsitta psixii) |
| Rueck's blue flycatcher | blauer Sumatra-Fliegenschnapper (Muscicapa ruecki) |
| russian blue tit | Lasurmeise (Parus cyanus, Parus pleskii) |
| russian blue tit | lasurblaue Meise (Parus cyanus, Parus pleskii) |
| small blue lema | Distelhähnchen (Lema cyanella, Oulema erichsoni sapporensis) |
| southern blue whiting | südlicher Wittling (Micromesistius australis) |
