| Valid Scientific Names Starting with "U" |
| n = 586 Search SeaLifeBase |
| Uaru amphiacanthoides |
| Uaru fernandezyepezi |
| Uca burgersi |
| Uca chlorophthalmus |
| Uca crenulata |
| Uca cumulanta |
| Uca leptodactyla |
| Uca longisignalis |
| Uca maracoani |
| Uca marguerita |
| Uca minax |
| Uca panacea |
| Uca pugilator |
| Uca pugnax |
| Uca rapax |
| Uca speciosa |
| Uca spinicarpa |
| Uca subcylindrica |
| Uca tangeri |
| Uca tetragonon |
| Uca thayeri |
| Uca virens |
| Uca vocans |
| Uca vocator |
| Ucides cordatus |
| Ucla xenogrammus |
| Udonchus tenuicaudatus |
| Udonella caligorum |
| Udonella ophiodontis |
| Uegitglanis zammaranoi |
| Uenasellus iyoensis |
| Uhlias limbatus |
| Uhlorchestia spartinophila |
| Uhlorchestia uhleri |
| Ulakanthura colac |
| Ulakanthura cooma |
| Ulakanthura crassicornis |
| Ulakanthura lara |
| Ulakanthura marlee |
| Ulakanthura namoo |
| Ulakanthura wanda |
| Ulcina olrikii |
| Ulmaris prototypus |
| Ulmaris snelliusi |
| Ulosa angulosa |
| Ulosa arenosa |
| Ulosa crawshayi |
| Ulosa digitata |
| Ulosa funicularis |
| Ulosa hispida |
| Ulosa intermedia |
| Ulosa rhoda |
| Ulosa rubra |
| Ulosa ruetzleri |
| Ulosa spongia |
| Ulosa topsenti |
| Ulua aurochs |
| Ulua mentalis |
| Uluguroscia austroafricana |
| Uluguroscia inflata |
| Uluguroscia madagascariensis |
| Uluguroscia montana |
| Uluguroscia pugionifera |
| Ulvaria subbifurcata |
| Umagilla forskalensis |
| Umbellula durissima |
| Umbellula encrinus |
| Umbellula hemigymna |
| Umbellula huxleyi |
| Umbellula lindahli |
| Umbellula monocephalus |
| Umbellula pellucida |
| Umbellula spicata |
| Umbellula thomsoni |
| Umbilia armeniaca |
| Umbilia capricornica |
| Umbilia petilirostris |
| Umbilibalcis lata |
| Umbonium costatum |
| Umbonium elegans |
| Umbonium guamensis |
| Umbonium vestiarium |
| Umbonium vestiarum |
| Umbonula alvareziana |
| Umbonula arctica |
| Umbonula inarmata |
| Umbonula littoralis |
| Umbonula ovicellata |
| Umbonula patens |
| Umbonula verrucosa |
| Umborotula bogorensis |
| Umbra krameri |
| Umbra limi |
| Umbra pygmaea |
| Umbraculum sinicum |
| Umbraculum umbraculum |
| Umbrina analis |
| Umbrina broussonnetii |
| Umbrina bussingi |
| Umbrina canariensis |
| Umbrina canosai |
| Umbrina cirrosa |
| Umbrina coroides |
| Umbrina dorsalis |
| Umbrina galapagorum |
| Umbrina imberbis |
| Umbrina milliae |
| Umbrina reedi |
| Umbrina roncador |
| Umbrina ronchus |
| Umbrina steindachneri |
| Umbrina wintersteeni |
| Umbrina xanti |
| Unantra polyvacuola |
| Unciherpia hirsuta |
| Uncinais uncinata |
| Uncinocythere allenae |
| Uncinocythere ambophora |
| Uncinocythere bicuspide |
| Uncinocythere cassiensis |
| Uncinocythere caudata |
| Uncinocythere clemsonella |
| Uncinocythere columbia |
| Uncinocythere cuadricuspide |
| Uncinocythere dobbinae |
| Uncinocythere equicurva |
| Uncinocythere ericksoni |
| Uncinocythere holti |
| Uncinocythere lucifuga |
| Uncinocythere neglecta |
| Uncinocythere occidentalis |
| Uncinocythere pholetera |
| Uncinocythere simondis |
| Uncinocythere simondsi |
| Uncinocythere spathe |
| Uncinocythere thektura |
| Uncinocythere warreni |
| Uncinocythere xania |
| Uncinocythere xena |
| Uncinocythere zancla |
| Uncinocythere zaruri |
| Unciola crassipes |
| Unciola crenatipalma |
| Unciola dissimilis |
| Unciola inermis |
| Unciola irrorata |
| Unciola laminosa |
| Unciola laticornis |
| Unciola leucopis |
| Unciola planipes |
| Unciola serrata |
| Unciola spicata |
| Unciolella lunata |
| Uncisudis advena |
| Uncisudis longirostra |
| Uncisudis posteropelvis |
| Uncisudis quadrimaculata |
| Uncopolynoe corallicola |
| Undecimastus sinaiticus |
| Undeuchaeta bispinosa |
| Undeuchaeta incisa |
| Undeuchaeta intermedia |
| Undeuchaeta major |
| Undeuchaeta minor |
| Undeuchaeta plumosa |
| Undinella altera |
| Undinella brevipes |
| Undinella compacta |
| Undinella frontalis |
| Undinella hampsoni |
| Undinella oblonga |
| Undinella simplex |
| Undinopsis armatus |
| Undinopsis bradyi |
| Undinula vulgaris |
| Undula paraensis |
| Unedogemmula deshayesii |
| Unela nahantensis |
| Unela remanei |
| Ungulilaimella bulbosa |
| Ungulilaimus filicaudatus |
| Ungusurculus collettei |
| Ungusurculus komodoensis |
| Ungusurculus philippinensis |
| Ungusurculus riauensis |
| Ungusurculus sundaensis |
| Ungusurculus williamsis |
| Unibrachium columbianum |
| Unicaecum ruszkowskii |
| Unicolax anonymous |
| Unicolax collateralis |
| Unicolax mycterobius |
| Uniomerus caroliniana |
| Uniomerus carolinianus |
| Uniomerus declivis |
| Uniomerus excultus |
| Uniomerus obesus |
| Uniomerus tetralasmus |
| Unioplus macraspis |
| Uniporodrilus granulothecus |
| Unisaccoides vitellosus |
| Unisaccus brisbanensis |
| Uniscyphus fragilis |
| Unitubulotestis maris |
| Univitellannulocystis katsuwoni |
| Univitellodidymocystis neothuuni |
| Upeneichthys lineatus |
| Upeneichthys stotti |
| Upeneichthys vlamingii |
| Upeneus arge |
| Upeneus asymmetricus |
| Upeneus australiae |
| Upeneus crosnieri |
| Upeneus davidaromi |
| Upeneus doriae |
| Upeneus filifer |
| Upeneus francisi |
| Upeneus guttatus |
| Upeneus japonicus |
| Upeneus luzonius |
| Upeneus mascareinsis |
| Upeneus moluccensis |
| Upeneus mouthami |
| Upeneus parvus |
| Upeneus pori |
| Upeneus quadrilineatus |
| Upeneus subvittatus |
| Upeneus sulphureus |
| Upeneus sundaicus |
| Upeneus taeniopterus |
| Upeneus tragula |
| Upeneus vittatus |
| Upeneus xanthogrammus |
| Uperoleia altissima |
| Uperoleia arenicola |
| Uperoleia aspera |
| Uperoleia borealis |
| Uperoleia capitulata |
| Uperoleia crassa |
| Uperoleia fusca |
| Uperoleia glandulosa |
| Uperoleia inundata |
| Uperoleia laevigata |
| Uperoleia lithomoda |
| Uperoleia littlejohni |
| Uperoleia marmorata |
| Uperoleia martini |
| Uperoleia micromeles |
| Uperoleia mimula |
| Uperoleia minima |
| Uperoleia mjobergi |
| Uperoleia orientalis |
| Uperoleia rugosa |
| Uperoleia russelli |
| Uperoleia talpa |
| Uperoleia trachyderma |
| Uperoleia tyleri |
| Uperotus clavus |
| Upogebia acanthura |
| Upogebia aestuari |
| Upogebia affinis |
| Upogebia annae |
| Upogebia aquilina |
| Upogebia bermudensis |
| Upogebia brasiliensis |
| Upogebia capensis |
| Upogebia careospina |
| Upogebia casis |
| Upogebia corallifora |
| Upogebia deltaura |
| Upogebia felderi |
| Upogebia inomissa |
| Upogebia jamaicensis |
| Upogebia lepta |
| Upogebia macginitieorum |
| Upogebia major |
| Upogebia marina |
| Upogebia molipollex |
| Upogebia noronhensis |
| Upogebia omissa |
| Upogebia omissago |
| Upogebia onychion |
| Upogebia operculata |
| Upogebia paraffinis |
| Upogebia pillsbury |
| Upogebia pugettensis |
| Upogebia pusilla |
| Upogebia spinistipula |
| Upogebia stellata |
| Upogebia vasquezi |
| Upogebia wuhsienweni |
| Upogebione ovalis |
| Upogebione phuketensis |
| Upogebione tropica |
| Upogebiophilus rhadames |
| Upselaspis caparti |
| Uptionyx verenae |
| Uraeotyphlus interruptus |
| Uraeotyphlus malabaricus |
| Uraeotyphlus menoni |
| Uraeotyphlus narayani |
| Uraeotyphlus oxyurus |
| Uramba brunnea |
| Uramba charina |
| Uramba maculata |
| Uramba marginalis |
| Uramba mus |
| Uramba pruinosa |
| Uramba somala |
| Uramba triangulifera |
| Uramphisopus pearsoni |
| Uranoscopus affinis |
| Uranoscopus albesca |
| Uranoscopus archionema |
| Uranoscopus bauchotae |
| Uranoscopus bicinctus |
| Uranoscopus cadenati |
| Uranoscopus chinensis |
| Uranoscopus cognatus |
| Uranoscopus crassiceps |
| Uranoscopus dahlakensis |
| Uranoscopus dollfusi |
| Uranoscopus filibarbis |
| Uranoscopus fuscomaculatus |
| Uranoscopus guttatus |
| Uranoscopus japonicus |
| Uranoscopus kaianus |
| Uranoscopus marisrubri |
| Uranoscopus marmoratus |
| Uranoscopus oligolepis |
| Uranoscopus polli |
| Uranoscopus scaber |
| Uranoscopus sulphureus |
| Uranoscopus tosae |
| Urashimea globosa |
| Uraspis helvola |
| Uraspis secunda |
| Uraspis uraspis |
| Urasterias lincki |
| Urechinus drygalskii |
| Urechinus loveni |
| Urechinus naresianus |
| Urechis caupo |
| Urechis chilensis |
| Urechis novaezealandiae |
| Urechis unicinctus |
| Urgorria compostelana |
| Urgorria monoplicata |
| Uria aalge |
| Uria lomvia |
| Urias spinosus |
| Urinatrema aspinosum |
| Urinatrema hirudinaceum |
| Uristes antennibrevis |
| Uristes californicus |
| Uristes cansada |
| Uristes dawsoni |
| Uristes enalladurus |
| Uristes entalladurus |
| Uristes lepidus |
| Uristes mediator |
| Uristes natalensis |
| Uristes perspinis |
| Uristes stebbingi |
| Uristes sulcus |
| Uristes umbonatus |
| Uristes velia |
| Urnatella gracilis |
| Urobatis concentricus |
| Urobatis halleri |
| Urobatis jamaicensis |
| Urobatis maculatus |
| Urobatis marmoratus |
| Urobatis tumbesensis |
| Urobopyrus processae |
| Urocampus carinirostris |
| Urocampus nanus |
| Urocaridella antonbrunii |
| Urocaridella antonbruunii |
| Urocaridella cyrtorhyncus |
| Urocaridella urocaridella |
| Urocaridella vestigialis |
| Uroconger erythraeus |
| Uroconger lepturus |
| Uroconger syringinus |
| Urocopia singularis |
| Urodasys acanthostylis |
| Urodasys anorektoxys |
| Urodasys apuliensis |
| Urodasys bucinostylis |
| Urodasys calicostylis |
| Urodasys cornustylus |
| Urodasys elongatus |
| Urodasys mirabilis |
| Urodasys nodostylus |
| Urodasys remostylus |
| Urodasys roscoffensis |
| Urodasys spirostylus |
| Urodasys uncinostylis |
| Urodasys viviparus |
| Urogonimus certhiae |
| Urogonimus macrostomus |
| Urogymnus asperrimus |
| Urogymnus ukpam |
| Urolophus armatus |
| Urolophus aurantiacus |
| Urolophus bucculentus |
| Urolophus circularis |
| Urolophus cruciatus |
| Urolophus deforgesi |
| Urolophus expansus |
| Urolophus flavomosaicus |
| Urolophus gigas |
| Urolophus javanicus |
| Urolophus kaianus |
| Urolophus kapalensis |
| Urolophus lobatus |
| Urolophus mitosis |
| Urolophus neocaledoniensis |
| Urolophus orarius |
| Urolophus papilio |
| Urolophus paucimaculatus |
| Urolophus piperatus |
| Urolophus sufflavus |
| Urolophus viridis |
| Urolophus westraliensis |
| Uromunna acarina |
| Uromunna biloba |
| Uromunna brevicornis |
| Uromunna cananeia |
| Uromunna deodata |
| Uromunna hayesi |
| Uromunna humei |
| Uromunna nana |
| Uromunna peterseni |
| Uromunna petiti |
| Uromunna phillipi |
| Uromunna powelli |
| Uromunna reynoldsi |
| Uromunna samariensis |
| Uromunna santaluciae |
| Uromunna schauinslandi |
| Uromunna serricauda |
| Uromunna sheltoni |
| Uromunna ubiquita |
| Urophycis brasiliensis |
| Urophycis chuss |
| Urophycis cirrata |
| Urophycis earllii |
| Urophycis floridana |
| Urophycis mystacea |
| Urophycis regia |
| Urophycis tenuis |
| Uroproctinella attenuata |