| Glossary Term starting with I |
| Search SeaLifeBase |
| IBM compatible |
| Ice fishing |
| Icefishes or noodlefishes |
| Iceland Museum of Natural History, Iceland |
| Ichnotaxon |
| Ichthidin |
| Ichthin |
| Ichthulin |
| Ichthyism |
| Ichthyismus |
| Ichthylepiden |
| Ichthyoacanthotoxin |
| Ichthyoacanthotoxism |
| Ichthyoallyeinotoxism |
| Ichthyocide |
| Ichthyocol |
| Ichthyocoprolite |
| Ichthyocrinotoxic fishes |
| Ichthyocrinotoxin |
| Ichthyofauna |
| Ichthyohemotoxic fishes |
| Ichthyohemotoxin |
| Ichthyohemotoxism |
| Ichthyohepatotoxic fishes |
| Ichthyohepatotoxin |
| Ichthyohepatotoxism |
| Ichthyoid |
| Ichthyolatry |
| Ichthyolite |
| Ichthyology |
| Ichthyomorphic |
| Ichthyoneuston |
| Ichthyootoxic fishes |
| Ichthyootoxin |
| Ichthyootoxism |
| Ichthyophagous |
| Ichthyoplankton |
| Ichthyopterygium |
| Ichthyosarcotoxic fishes |
| Ichthyosarcotoxin |
| Ichthyosarcotoxism |
| Ichthyosis |
| Ichthyotoxicology |
| Ichthyotoxin |
| ICLARM |
| Iconotype |
| Identification |
| Identification key |
| IGFA |
| Ikijime |
| Ikra |
| Ikura |
| Illicium |
| Illinois Natural History Survey, Chicago |
| Imago |
| Imbricated |
| Immigration |
| Impounding net |
| Imprinting |
| In situ |
| In-situ |
| In-situ conservation |
| In-situ production |
| Inactive reproductive state |
| Inappropriate name |
| Inarticulate |
| Inbreeding |
| Incertae sedis |
| Incidental catch |
| Incipient |
| Incipient fin ray |
| Incised |
| Incised membrane |
| Incisiform |
| Incisor |
| Incisure |
| Inclusive fitness |
| Incomplete reef top |
| Increment |
| Incubation |
| Incubation period |
| Incubator |
| Incurrent apertures |
| Indented |
| Independent dentition |
| Indeterminate |
| Indeterminate fecundity |
| Index |
| Index of Biotic Integrity |
| Indian ilisha |
| Indian Ocean |
| Indian oil sardine |
| Indiana State University, Department of Life Sciences, Indiana |
| Indication |
| Indicator |
| Indicator species |
| Indigenous |
| Indigenous knowledge |
| Indigenous people |
| Individual quota |
| Individual selection |
| Individual transferable quota |
| Individually poly bagged |
| Individually quick frozen |
| Indo-Australian Archipelago |
| Indo-Pacific |
| Indo-West Pacific |
| Induced breeding |
| Induced spawning |
| Industrial fish |
| Industrial fishery |
| Infaunal |
| Inferior |
| Infestation |
| Inflatable |
| Information |
| Information system |
| Infra |
| Infrageneric |
| Infraorbital |
| Infraorbital canal |
| Infrapharyngeal bones |
| Infraspecies |
| Infraspecific name |
| Infrasubspecific |
| Infrasubspecific name |
| Infrasubspecific taxon |
| Ingroup |
| Initial phase |
| Initial-phase |
| Inland water |
| Inlet |
| INM |
| Innate |
| Inner corner |
| Inner ear |
| Inner margin |
| Inner Seas off the West Coast of Scotland |
| Input controls |
| Inquiline |
| Insecta |
| Insecticide |
| Insertion |
| Insertion and copulation |
| Insertion of fins |
| Inshore fishery |
| Inshore plain |
| Inshore waters |
| Instantaneous rates |
| Instinct |
| Institut Royal des Sciences Naturelles de Belgique, Brussels |
| Institut zoologii PAN, Warszawa, Poland |
| Institute für Seefischerei, Hamburg |
| Institute of Biological Sciences, University of Tsukuba |
| Institute of Oceanic Research and Development |
| Institute of Zoology, Academia Sinica, Taipei |
| Institutions |
| Instituto de Ciencias del Mar |
| Instituto de Ciencias del Mar, Barcelona |
| Instituto de Limnología "Dr. Raúl A. Ringuelet" |
| Instituto Nacional de Pesquisas da Amazonia |
| Insular |
| Integrated coastal zone management |
| Integrated fish farming |
| Integument |
| Intensive culture |
| Inter |
| Inter-islet channel |
| Inter-radial membrane |
| Interbreeding |
| Intercuale |
| Interdorsal |
| Interdorsal ridge |
| Interface |
| Interhaemal bones |
| Interleaved |
| Intermittent |
| Intermuscular bones |
| Internal bearer |
| Internal fertilisation |
| Internarial |
| Internarial space |
| Internasal |
| Internasal flap |
| Internasal valve |
| International Game Fish association |
| Internet |
| Interneural bones |
| Interoparity |
| Interopercle |
| Interorbital |
| Interorbital distance |
| Interorbital space |
| Interpelvic space |
| Interpolated name |
| Interradial |
| Interradial membrane |
| Interrenal gland |
| Interspace |
| Interspecific |
| Interspinous membrane |
| Intersticine |
| Interstitial |
| Intertidal |
| Intertidal lagoon with intertidal connection |
| Intestine |
| Intrageneric |
| Intraspecific |
| Intraspecific genetic variation |
| Intrinsic |
| Intrinsic growth rate |
| Intrinsic rate of increase |
| Intrinsic value |
| Introduced |
| Introduced species |
| Introgression |
| Intromittent fertilisation |
| Invalid |
| Invalid name |
| Invalid nomenclatural act |
| Invasive species |
| Inventory |
| Inversion |
| Invertebrates |
| Invertivore |
| Iodoform odour |
| Ionian Sea |
| Ionic regulation |
| Iowa State University , Ames |
| Ipsilateral |
| Iridescent |
| Iridocyte |
| Iris |
| Irish Sea and St. George's Channel |
| Irish trawl |
| Irodocytes |
| Irradiation |
| Isaac-Kidd-midwater trawl |
| Isallotherm |
| Isinglass |
| Island biogeography |
| Isobath |
| Isobatic |
| Isobenth |
| Isocercal |
| Isocheim |
| Isodont |
| Isoenzyme |
| Isoflor |
| Isohydric |
| Isohyet |
| Isolating mechanism |
| Isolecithal |
| Isonome |
| Isopiptesis |
| Isopod |
| Isopropyl |
| Isopropyl alcohol |
| Isosmotic |
| Isospondylous |
| Isotach |
| Isotherm |
| Isotonic |
| Isozoic |
| Isozyme |
| ISSCAAP |
| Isthmus |
| IT |
| Italian |
| Italian sardel |
| Iteroparity |
| Iteroparous |
| IUCN |
| Izu Oceanic Park |