KnowKi

Learn the wildlife of marine protected areas

Learn the wildlife of Fernando de Noronha

Brazil

340 species have research-grade observations in Fernando de Noronha on iNaturalist. KnowKi turns the most recorded into short lessons with real photos, from fish and seabirds to the life along the shore.

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Āki the kiwi, KnowKi's guide

Most recorded here

The species with the most research-grade observations on iNaturalist, and how many each has. Most recorded doesn't mean native.

Birds

  1. Red-footed Booby Sula sula155
  2. Magnificent Frigatebird Fregata magnificens126
  3. Brown Booby Sula leucogaster113
  4. Atlantic White-Tern Gygis alba94
  5. Noronha Vireo Vireo gracilirostris75
  6. Eared Dove Zenaida auriculata72
  7. Noronha Elaenia Elaenia ridleyana56
  8. Brown Noddy Anous stolidus50
  9. Western Cattle-Egret Ardea ibis49
  10. White-tailed Tropicbird Phaethon lepturus44

Plants

  1. Cereus insularis63
  2. Red Bean Tree Erythrina velutina16
  3. Beach Morning Glory Ipomoea pes-caprae15
  4. Bay-leaved caper Cynophalla flexuosa13
  5. White leadtree Leucaena leucocephala9
  6. Rosary pea Abrus precatorius7
  7. Ficus cyclophylla7
  8. Cuban Buttercup Turnera subulata7
  9. Oxalis psoraleoides7
  10. Sapium sceleratum6

Mammals

  1. Rock Cavy Kerodon rupestris93
  2. Spinner Dolphin Stenella longirostris64
  3. Black Rat Rattus rattus3
  4. Pantropical Spotted Dolphin Stenella attenuata1
  5. Brown Rat Rattus norvegicus1
  6. House Mouse Mus musculus1
  7. Domestic Dog Canis familiaris1
  8. Domestic Cat Felis catus1
  9. Domestic Horse Equus caballus1

Insects

  1. Hanno Blue Hemiargus hanno9
  2. Polistes ridleyi9
  3. Western Honey Bee Apis mellifera3
  4. Mallodon spinibarbis3
  5. Ornate Bella Moth Utetheisa ornatrix2
  6. Vine Sphinx Eumorpha vitis2
  7. Aegomorphus ridleyi2
  8. Surinam Cockroach Pycnoscelus surinamensis1
  9. Common House Fly Musca domestica1
  10. Odontomachus bauri1

Spiders and kin

  1. Silver Garden Orbweaver Argiope argentata4
  2. Pantropical Huntsman Spider Heteropoda venatoria3
  3. Gray Wall Jumping Spider Menemerus bivittatus3
  4. Adanson's House Jumper Hasarius adansoni3
  5. Ninja-star Ceiling Spider Zosis geniculata1
  6. Matagaia chromatopus1

Reptiles

  1. Noronha Skink Trachylepis atlantica204
  2. Green Sea Turtle Chelonia mydas62
  3. Argentine Black-and-white Tegu Salvator merianae57
  4. Hawksbill Sea Turtle Eretmochelys imbricata17
  5. Tropical House Gecko Hemidactylus mabouia11
  6. Noronha Worm Lizard Amphisbaena ridleyi5
  7. Green Iguana Iguana iguana2
  8. Loggerhead Sea Turtle Caretta caretta1
  9. Geoffroy’s Side-necked Turtle Phrynops geoffroanus1
  10. Peters' Lava Lizard Tropidurus hispidus1

Amphibians

  1. Cururu Toad Rhinella diptycha26
  2. Venezuela Snouted Tree Frog Scinax x-signatus8
  3. Red Snouted Tree Frog Scinax ruber1

Fish

  1. Atlantic Sergeant Major Abudefduf saxatilis65
  2. Noronha Wrasse Thalassoma noronhanum57
  3. Rocas Gregory Stegastes rocasensis57
  4. Doctorfish Acanthurus chirurgus54
  5. Coney Cephalopholis fulva46
  6. Atlantic Blue Tang Acanthurus coeruleus44
  7. Smallmouth Grunt Brachygenys chrysargyrea40
  8. Squirrelfish Holocentrus adscensionis38
  9. Brazilian Frillfin Bathygobius brasiliensis36
  10. Chain Moray Echidna catenata32

Mollusks

  1. Nerita chlorostoma18
  2. Brazilian Reef Octopus Octopus insularis14
  3. Echinolittorina vermeiji9
  4. Fissurella emmanuelae6
  5. West Indian Starsnail Lithopoma tectum4
  6. Lottia noronhensis4
  7. Hyperaulax ridleyi3
  8. Wavy Bubble Snail Micromelo undatus2
  9. Ridleyconcha quinquelirata2
  10. Leucozonia ocellata1

How a trip works

A trip has its own trail of lessons: meet six species, match them to new photos, then practice with four choices. Species you learn go into your Fieldbook, and starting a trip earns its Passport stamp. Your home place stays as it is.

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Species lists and counts from research-grade observations on iNaturalist, as of October 2026. KnowKi is not affiliated with NOAA or any area's managers. Free, with no ads, no account and no purchases.