• Abudefduf saxatilis Hauptfeldwebefisch
  Sergeant major
  Chauffet soleil
  
• Acanthocybium solandri Wahoo
  Thazard-bâtard
  
• Acanthopleura granulata Fuzzy chiton
  
• Acanthurus bahianus Ocean surgeonfish
  Chirurgien marron
  
• Acanthurus chirurgus Doctorfish
  Chirurgien docteur
  
• Acanthurus coeruleus Blauer Doktorfisch
  Blue tang
  Chirurgien bayolle
  
• Acetabularia crenulata Grüne Schirmalge
  Mermaid's wine glass
  Acétabulaire vente
  Groen parasolwier
  
• Acropora cervicornis Hirschgewei-Koralle
  Staghorn coral
  Corail corne-de-cerf
  Geweikoraal
  
• Acropora palmata Elchgewei-Koralle
  Elkhorn coral
  Acropore bois d'élan
  Elandsgeweikoraal
  
• Acropora prolifera Fused staghorn coral
  
• Aetobatus narinari Gefleckter Adlerrochen
  Spotted eagle ray
  Raie-lèopard
  
• Agaricia agaricites Salatblatt-Koralle
  Tan lettuce-leaf coral
  Agarice laitue
  Slakoraal
  
• Agaricia fragilis Fragile saucer coral
  
• Agaricia grahamae Graham's sheet coral
  
• Agaricia lamarcki Lamarck's sheet coral
  
• Agaricia undata Scroll coral
  
• Agelas clathrodes Elefantenohr-Schwamm
  Orange elephant ear sponge
  Oranje rubberspons
  
• Agelas conifera Brown tube sponge
  
• Agelas nsp.
• Aiolochroia crassa Gelber Verzweigter Röhrenschwamm
  Branching tube sponge
  Gele vertakte buisspons
  
• Aiptasia tagetes Blasse Anemone
  Pale anemone
  Anémone pâle
  Glasanemoon
  
• Aka coralliphaga Gelber Bohrschwamm
  Variable boring sponge
  Gele boorspons
  
• Albula vulpes Frauenfish
  Banana fish
  Banane de mer
  
• Aluterus scriptus Scrawled filefish
  Baliste écriture
  
• Amphimedon viridis
• Analcidometra armata Swimming crinoid
  
• Anamobaea orstedii Split-crown feather duster
  
• Anilocra laticaudata Soldierfish isopod
  
• Anisotremus surinamensis Black margate
  Lippu croupia
  
• Antennarius multiocellatus Longlure frogfish
  
• Anthosigmella varians Brauner Wechsel-Schwamm
  Brown vulcano carpet sponge
  Veranderlijke spons
  
• Antipathes gracilis Orange sea fan black coral
  
• Antipathes lenta Hair net black coral
  
• Antipathes pennacea Feather black coral
  
• Aplysia dactylomela Spotted sea hare
  
• Aplysina archeri Ofenrohr-Schwamm
  Stove-pipe sponge
  Paarse buisspons
  
• Aplysina cauliformis Reihenporen-Seilschwamm
  Row pore rope sponge
  Opeenvolgende-openingen touwspons
  
• Aplysina fistularis Gelber Röhrenschwamm
  Yellow tube sponge
  Gele buisspons
  
• Aplysina fulva Poriger Seil-Schwamm
  Scattered pore rope sponge
  Verstrooide-openingen touwspons
  
• Aplysina lacunosa Convoluted barrel sponge
  
• Apogon binotatus Barred cardinalfish
  
• Apogon lachneri Whitestar cardinalfish
  
• Apogon townsendi Belted cardinalfish
  
• Arachnanthus nocturnus Banded tube-dwelling anemone
  
• Astichopus multifidus Furry sea cucumber
  
• Astraea tecta West Indian star-shell
  
• Astrangia solitaria Dwarf cup coral
  
• Astrophyton muricatum Great basket star
  
• Aulostomus maculatus Gefleckter Trompetfisch
  Trumpetfish
  Trompette
  Trompetvis
  
• Avrainvillea nigricans Paddel-Alge
  Paddle blade alga
  Algue-pagaie
  Peddelwier