KnowKi

Learn the wildlife of any country

Learn the wildlife of Christmas Island

Oceania

1,192 species have research-grade observations in Christmas Island on iNaturalist. KnowKi turns the most recorded into short lessons with real photos, so you can learn a country's wildlife from home.

Start this trip in KnowKi →
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. Brown Booby Sula leucogaster189
  2. Red-footed Booby Sula sula184
  3. Christmas island-thrush Turdus erythropleurus152
  4. White-tailed Tropicbird Phaethon lepturus138
  5. Christmas Island Frigatebird Fregata andrewsi131
  6. Christmas Imperial Pigeon Ducula whartoni118
  7. Abbott's Booby Papasula abbotti99
  8. Brown Goshawk Tachyspiza fasciata99
  9. Great Frigatebird Fregata minor94
  10. Red-tailed Tropicbird Phaethon rubricauda84

Plants

  1. Beach naupaka Scaevola taccada30
  2. Coral Vine Antigonon leptopus20
  3. Brackishwater Mangrove Barringtonia racemosa20
  4. Yellow alder Turnera ulmifolia19
  5. Fish Poison Tree Barringtonia asiatica15
  6. Sea hibiscus Hibiscus tiliaceus14
  7. Calabur tree Muntingia calabura14
  8. Elephant's Ear Macaranga tanarius13
  9. Papaya Carica papaya11
  10. Flamboyant Delonix regia11

Mammals

  1. Black-eared Flying-fox Pteropus melanotus119
  2. Spinner Dolphin Stenella longirostris15
  3. Black Rat Rattus rattus10

Insects

  1. Great Eggfly Hypolimnas bolina121
  2. Lesser Grass Blue Zizina otis46
  3. Malayan Eggfly Hypolimnas anomala43
  4. Polistes balder38
  5. Meadow Argus Junonia villida33
  6. Swell moth Brana calopasa33
  7. Three-spotted Grass Yellow Eurema blanda32
  8. Gram Blue Euchrysops cnejus29
  9. Yellow Crazy Ant Anoplolepis gracilipes28
  10. Giant Asian Mantis Hierodula patellifera28

Spiders and kin

  1. Giant Golden Orbweaver Nephila pilipes62
  2. Batik Golden Web Spider Trichonephila antipodiana16
  3. Argiope modesta12
  4. Pantropical Huntsman Spider Heteropoda venatoria5
  5. Black-and-white Spiny Spider Gasteracantha kuhli5

Reptiles

  1. Asian House Gecko Hemidactylus frenatus37
  2. Christmas Island Giant Gecko Cyrtodactylus sadleiri28
  3. Hawksbill Sea Turtle Eretmochelys imbricata10
  4. Common Wolf Snake Lycodon capucinus8
  5. Common Four-clawed Gecko Gehyra mutilata5
  6. Green Sea Turtle Chelonia mydas5

Fish

  1. Whitecheek Surgeonfish Acanthurus nigricans84
  2. Black Triggerfish Melichthys niger79
  3. Arc-eye Hawkfish Paracirrhites arcatus65
  4. Checkerboard Wrasse Halichoeres hortulanus60
  5. Moorish Idol Zanclus cornutus58
  6. Ornate Hawkfish Paracirrhites hemistictus57
  7. Freckled Hawkfish Paracirrhites forsteri56
  8. Raccoon Butterflyfish Chaetodon lunula54
  9. Striped Surgeonfish Acanthurus lineatus51
  10. Bluepatch Parrotfish Scarus forsteni49

Mollusks

  1. African Giant Snail Lissachatina fulica28
  2. Day Octopus Octopus cyanea24
  3. Noah's Giant Clam Tridacna noae15
  4. Indian Caloria Caloria indica14
  5. Pleated Nerite Nerita plicata12
  6. Black-and-white Cone Snail Conus ebraeus11
  7. Painted Phyllidia Phyllidia picta10
  8. Vermiculate Cone Conus chaldaeus10
  9. Turbo lajonkairii10
  10. Varicose Wart Slug Phyllidia varicosa9

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.

Start this trip in KnowKi →

Species lists and counts from research-grade observations on iNaturalist, as of October 2026. Free, with no ads, no account and no purchases.