InvertebratesVertebratesMolluscaMolecular Sequence DataEchinodermataCrustaceaUrochordataChordata, NonvertebrateAquatic OrganismsAmino Acid SequencePhylogenyPolychaetaBivalviaAnnelidaArthropodsCnidariaCiona intestinalisPhotoreceptor Cells, InvertebrateEvolution, MolecularGanglia, InvertebrateGastropodaBiological EvolutionInsectsMarine BiologyDrosophila melanogasterSequence Homology, Amino AcidSea CucumbersSpecies SpecificityLymnaeaLarvaEcosystemAmphipodaHemocytesOligochaetaCaenorhabditis elegansFood ChainBase SequenceInvertebrate HormonesChordataDrosophila ProteinsSequence AlignmentDrosophilaPoriferaCephalopodaBrachyuraBryozoaPlay and PlaythingsMytilusDaphniaSnailsFishesAstacoideaHorseshoe CrabsBiodiversityOceans and SeasLeechesThoracicaCloning, MolecularRotiferaOctopamineGene Expression Regulation, DevelopmentalNephropidaeConserved SequencePlatyhelminthsAnthozoaHemolymphDNA, ComplementaryBiomphalariaIsopodaSea UrchinsSignal TransductionModels, BiologicalEmbryo, NonmammalianDecapoda (Crustacea)Insect ProteinsHydrozoaBeesIridovirusCaenorhabditis elegans ProteinsSeawaterMultigene FamilyBeetlesLoligoReceptors, Biogenic AmineCrassostreaGrasshoppersSequence Analysis, DNAPectinidaeMammalsDecapodiformesAnimal RightsReceptors, Invertebrate PeptidePenaeidaePredatory BehaviorCoral ReefsProtein Structure, TertiaryCockroachesMutationPopulation DynamicsHelix (Snails)