| Glossary Term starting with A |
| Search SeaLifeBase |
| Aalpricken |
| Abaxial |
| Abbreviate heterocercal |
| Abdomen |
| Abdominal |
| Abdominal cavity |
| Abdominal fins |
| Abdominal keel |
| Abdominal pore |
| Aberrant |
| Aberration |
| Abiogenic |
| Abiotic |
| Ablation |
| Ablation till |
| Aboral |
| Abraded |
| Abrasion |
| Abscess |
| Absolute fecundity |
| Absolute growth rate |
| Absolute tautonymy |
| Absorption |
| Abstraction |
| Abutment |
| Abyss |
| Abyssal |
| Abyssal depth |
| Abyssal hills |
| Abyssal plain |
| Abyssal zone |
| Abyssopelagic |
| Academia Sinica, Institute of Zoology, Taipei |
| Academy of Natural Sciences of Philadelphia |
| Academy of Sciences, Institute of Oceanology |
| Acanthostedion |
| Acanthotrich |
| Acaricide |
| Accept |
| Accession |
| Accessory caudal ray |
| Accessory dorsal branch |
| Accessory dorsal margin |
| Accessory fins |
| Accessory male |
| Accessory pelvic appendage |
| Accessory scales |
| Acclimation |
| Acclimatization |
| Acclivous |
| Accretion |
| Accumulation zone |
| Acentric |
| Aciculate |
| Acid cured fish |
| Acid drainage |
| Acid rain |
| Acid-base balance |
| Acidic deposition |
| Acidification |
| Acidity |
| Acidophilic |
| Acidophilous |
| Acidosis |
| Acinaciform |
| Acini |
| Acipenserin |
| Acoustic dispersion |
| Acoustic scattering |
| Acoustic tag |
| Acoustics |
| Acquic moisture regime |
| Acriflavin |
| Acrodin |
| Acrodont |
| Acronurus larva |
| Actic |
| Actinobiology |
| Actinomycin D |
| Actinomycosis |
| Actinophore |
| Actinost |
| Actinotrichia |
| Activated sludge process |
| Active channel |
| Active metabolism |
| Active reproductive state |
| Active slope |
| Active valley wall processes |
| Active water table |
| Actophilous |
| Actual mesh size |
| Actual shoreline |
| Aculeiform |
| Acuminate |
| Acute |
| Acute toxicity |
| Ad libitum |
| Adaptation |
| Adaptive behavior |
| Adaptive management |
| Adaptive radiation |
| Addis Ababa University |
| Adductor mandibulae muscles |
| Adelphophagy |
| Adenocarcinoma |
| Adenoid organ |
| Adenoma |
| Adfluvial |
| Adhesion |
| Adhesive eggs |
| Adipose |
| Adipose eyelid |
| Adipose fin |
| Adipose tissue |
| Adjuvant |
| Adnate |
| Adnexed |
| Adpressed |
| Adriatic Sea |
| Adsorbed water |
| Adsorption |
| Adult |
| Advance |
| Adventitious embryony |
| Aegean Sea (The Archipelago) |
| Aeolian deposits |
| Aerated lagoon |
| Aeration |
| Aerial trap |
| Aerobic |
| Aerofoils |
| Aeromonas |
| Aestival pond |
| Aestivating lungfishes |
| Aestivation |
| Aetiology |
| Affinis |
| Affinity index |
| Affluent |
| Aflatoxins |
| African tetras |
| Agamete |
| Agamic |
| Agamogony |
| Agamont |
| Agamous |
| Agape |
| Agar |
| Age at first maturity |
| Age structure |
| Age validation |
| Ageing |
| Agglutination |
| Agglutinin |
| Aggradation |
| Aggregate |
| Aggregate stability |
| Aggregated/clumped/contiguous distribution |
| Aggregation |
| Aggression |
| Aggressive mimicry |
| Aglomerular |
| Agnatha |
| Agonistic behavior |
| Agonistic behaviour |
| Agranulocyte |
| Agranulocytosis |
| Ahermatypic |
| Aholeholes |
| Air |
| Air bladder |
| Air bubble curtain |
| Air saturation value of dissolved oxygen |
| Air stripping |
| Airbreathing catfishes |
| Airsac catfishes |
| Akaryotic |
| Ala laminaris |
| Alabama Marine Resources Laboratory |
| Alae |
| Alar scale |
| Alar spines |
| Alar thorns |
| Alarm substance |
| Alaska Fisheries Science Center, Seattle |
| Albany beef |
| Albedo |
| Albinism |
| Albondiga de pescado |
| Alboran Sea |
| Alcohol |
| Alecithal |
| Alevin |
| Alfonsinos |
| Algae |
| Algae eaters |
| Algal bed |
| Algal bloom |
| Algal mounds |
| Algal ridge |
| Algal toxicosis |
| Algal wash |
| Algicide |
| Algicides |
| Alginic acid |
| Algivore |
| Algorithm |
| Alien |
| Alien species |
| Aliform |
| Alimentary canal |
| Alimentary tract |
| Aliquot |
| Alisphenoid |
| Alizarin |
| Alkali |
| Alkaline |
| Alkalinity |
| Alkalosis |
| All-female species |
| Alla carne |
| Allec |
| Allele |
| Allele frequency |
| Allochronic species |
| Allochthonous |
| Allogence succession |
| Allogenic |
| Allometric |
| Allometry |
| Allopatric |
| Allosome |
| Allotopic |
| Allotrophic lake |
| Allotype |
| Allozyme |
| Alluvial |
| Alluvial cone |
| Alluvial dam |
| Alluvial deposit |
| Alluvial fan |
| Alluvial fill |
| Alluvial flat |
| Alluvial plain |
| Alluvial soil |
| Alluvial stream |
| Alluvial terrace |
| Alluvial valley |
| Alluvial valley floor |
| Alluvion |
| Alluvium |
| Almôndega de peixe |
| Almost atoll |
| Alpha atresia |
| Alternate teeth |
| Altitude |
| Altricial |
| Altruism |
| Altruistic behavior |
| Alveolar |
| Alveolar ridge |
| Alveolus |
| Amarelo cure |
| Ambergris |
| Ambient |
| Ambient noise |
| Ambient temperature |
| Ambush predator |
| Amensal |
| American Museum of Natural History, New York |
| American soles |
| American Standard Code for Information Interchange |
| Amictic |
| Amino acids |
| Ammocoete |
| Ammocoetes |
| Ammonia |
| Ammonotelic |
| Amnion |
| Amorphous |
| Amphibia |
| Amphibians |
| Amphibiotic |
| Amphiboreal |
| Amphidromous |
| Amphipods |
| Amphistylic |
| Amphitemperate |
| Amphitrophic |
| Amphitropical |
| Amplitude |
| Ampullae |
| Ampullae of Lorenzini |
| Ampullary organ |
| Anabolism |
| Anacanthous |
| Anadromous |
| Anaemia |
| Anaerobe |
| Anaerobic |
| Anaerobic digestion |
| Anaerobic respiration |
| Anaesthetics |
| Anagram |
| Anal |
| Anal fin |
| Anal fin origin |
| Anal fin ray count |
| Anal papilla |
| Analogous |
| Analytical watershed |
| Anaplasia |
| Anatolia |
| Anchialine |
| Anchobi pêsuto |
| Anchor ice |
| Anchosen |
| Anchovies |
| Anchovis |
| Anchovy cream |
| Anchovy essence |
| Anchovy paste |
| Ançuez |
| Andaman or Burma Sea |
| Androcyclic parthenogenesis |
| Androgamone |
| Androgens |
| Angel |
| Angel sharks |
| Angelfishes |
| Angiospermophyta |
| Angle of lower jaw |
| Angle of repose |
| Angling |
| Angular |
| Animal kingdom |
| Anjovissäilyke |
| Anjovistahna |
| Ankylose |
| Anlage |
| Annelida |
| Annelids |
| Annual breeder |
| Annual fecundity |
| Annual fish |
| Annular |
| Annuli |
| Annulus |
| Anonymous |
| Anonymous work |
| Anorexia |
| Anoxia |
| Anoxic |
| Ansjospostei |
| Ansjovis |
| Ansjovis pastei |
| Antagonism |
| Antarctic dragonfishes |
| Ante mortem |
| Antecedent soil moisture |
| Antenna |
| Antennule |
| Antepenultimate |
| Anterior |
| Anterior fontanelle |
| Anterior margin |
| Anterior nasal flap |
| Anterior teeth |
| Anterodorsal palpebral depressor muscle |
| Anterolateral |
| Anthelmintic |
| Anthropogenic |
| Anthropogenic effects |
| Anti-fouling agent |
| Antibiotic |
| Antibiotic sensitivity tests |
| Antibiotics |
| Antibody |
| Antifungal agents |
| Antigen |
| Antigenic drift |
| Antimere |
| Antioxidant |
| Antiozonant |
| Antipodean |
| Antiseptic |
| Antiserum |
| Antitropical |
| Antivitamin |
| Antorbital |
| Antorbital cartilages |
| Antrorse |
| Anuria |
| Anus |
| Apex |
| Apex predator |
| Aphagous |
| Aphotic |
| Aphotic zone |
| Aphragmabacteria |
| Aphytal |
| Apical |
| Aplacental |
| Aplacental viviparity |
| Aplacental yolksac viviparity |
| Aplasia |
| Aplastic anaemia |
| Aplesodic fin |
| Apode fishes |
| Apomixis |
| Apomorph |
| Apomorphy |
| Apopyle |
| Aposematic |
| Appendage |
| Appetitsild |
| Application |
| Application factor |
| Approximation |
| Apressed |
| Apron |
| Aptitsill |
| Aquaculture |
| Aquaculture Center |
| Aquaculture Department Museum |
| Aquarist |
| Aquatic |
| Aquatic bed |
| Aquatic ecosystem |
| Aquatic habitat |
| Aquatic organism |
| Aquatic system |
| Aquic |
| Aquic moisture regime |
| Aquiclude |
| Aquifer |
| Arabian Sea |
| Arachnida |
| Arafura Sea |
| Arbitrary combination of letters |
| Arborescent |
| Arboriform |
| Arbroath smokie |
| Arch |
| Arched roots |
| Archerfishes |
| Archi- |
| Archipelagic apron |
| Arcites |
| Arctic Ocean |
| Area of occupancy |
| Area-capacity curve |
| Arenque doirado |
| Arenque em marinada |
| Arenque gordo preparado |
| Argentines or herring smelts |
| Argulus |
| Arinca fumada |
| Aringa fritta marinata |
| Aringa grassa intera dorata |
| Aringa grassa preparata |
| Aringhe alla Bismarck |
| Aringhe dorate |
| Ariommatids |
| Arkansas State University Museum |
| Arkansas Tech Fish Collection |
| Arm |
| Armored blenny |
| Armored catfishes |
| Armorhead catfishes |
| Armorheads |
| Armoring (also armouring) |
| Arrow |
| Arrow worms |
| Arroyo |
| Artefact |
| Artenkreis |
| Artesian bores |
| Artesian well |
| Arthropoda |
| Article |
| Articulated |
| Articulating |
| Articulation |
| Artificial beach |
| Artificial channel |
| Artificial control |
| Artificial fertilization |
| Artificial hybrid |
| Artificial recharge |
| Artificial selection |
| Artificial substrate |
| Artisanal fisheries |
| Ascending process |
| Ascending process of premaxilla |
| Ascidians |
| Ascites |
| Ascomycota |
| Ascorbic acid |
| Asepsis |
| Asexual reproduction |
| Asia |
| Asia Minor |
| Asiatic glassfishes |
| Asinello affumicato |
| Aspect |
| Aspect ratio |
| Asperite |
| Asperity |
| Asphyxia |
| Assimilation |
| Assimilation capacity |
| Assimilation efficiency |
| Association |
| Assortative mating |
| Astatic |
| Astaxanthin |
| Asteriscus |
| Asymmetrical |
| Asymmetry |
| Asymptomatic carrier |
| Asymptotic length |
| Asymptotic threshold concentration |
| Asymptotic weight |
| Asynchronous oocyte development |
| Asynchronous ovary development |
| Atamara |
| Athalassohaline lake |
| Atlantic Reference Centre, New Brunswick |
| Atlas |
| Atoll |
| Atreitic oocytes |
| Atresia |
| Atrophy |
| Attendant male |
| Attenuate |
| Attenuated |
| Attenuated vaccine |
| Attenuation |
| Attribute |
| Atypical |
| Auburn University Museum |
| Auchmithie cure |
| Auckland Institute and Museum |
| Auditory ossicle |
| Auditory vesicle |
| Aufwuchs |
| Auke Bay Fisheries Laboratory, National Marine Fisheries Service, Alaska |
| Aulopus |
| Aural |
| Austral |
| Australian |
| Australian lungfish |
| Australian Museum, Sydney |
| Australian salmon |
| Autecology |
| Author |
| Autoantibody |
| Autochthonous |
| Autogamy |
| Autogenic succession |
| Autoinfection |
| Autolysis |
| Automatic feeder |
| Autopalatine |
| Autopotamic |
| Autopsy |
| Autosome |
| Autotroph |
| Autotrophic algae |
| Autotrophic lake |
| Auxillary scales |
| Auxotrophic algae |
| Available name |
| Available nomenclatural act |
| Available work |
| Avascular |
| Average population |
| Aves |