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  Ocean sunfish

  Mola mola

  The Ocean sunfish, scientifically known as Mola mola, is an extraordinary and fascinating marine creature that defies the typical fish archetype with its unique appearance and behaviors. This colossal fish is most notable...
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  Ocellaris clownfish

  Amphiprion ocellaris

  The Ocellaris clownfish, scientifically known as Amphiprion ocellaris, is a vibrantly colored marine fish that belongs to the family Pomacentridae. This species, often simply referred to as the clownfish, has captured the...
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  Oilbird

  Steatornis caripensis

  The Oilbird, scientifically known as Steatornis caripensis, is a truly unique and fascinating avian species, not just because of its distinctive lifestyle and dietary habits, but also due to its exceptional navigational...
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  Old world swallowtail

  Papilio machaon

  The Old World Swallowtail (Papilio machaon), a striking and widely recognized butterfly, is a member of the family Papilionidae, which comprises large and colorful butterflies commonly referred to as swallowtails. This...
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  Olive baboon

  Papio anubis

  The Olive Baboon (Papio anubis), a prominent member of the Old World monkey family, stands out as a fascinating and adaptable primate species indigenous to 25 African countries. This species derives its common name from...
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  Olive ridley sea turtle

  Lepidochelys olivacea

  The Olive Ridley sea turtle (Lepidochelys olivacea), named for the olive color of its heart-shaped shell or carapace, is one of the smallest species within the sea turtle family. Adult Olive Ridleys typically weigh...
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  Olm

  Proteus anguinus

  The Olm, scientifically known as Proteus anguinus, is a fascinating and unique species of aquatic salamander that dwells in the dark, subterranean waters of limestone caves found primarily in the Dinaric Alps, stretching...
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  Orange sallow

  Tiliacea citrago

  The Orange Sallow, scientifically named Tiliacea citrago, is a captivating moth species belonging to the family Noctuidae, a large family known for its nocturnal habits and diverse species. This particular moth is...
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  Orangutans

  Pongo

  Orangutans, belonging to the genus Pongo, are among the most iconic and fascinating primates on the planet. Native primarily to the lush rainforests of Borneo and Sumatra, these magnificent creatures are the world's...
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  Oriental cockroach

  Blatta orientalis

  The Oriental cockroach (Blatta orientalis), often referred to as the waterbug or black beetle, is a large species of cockroach native to the warm, temperate and tropical regions of Africa. However, it has spread widely...
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  Oriental hornet

  Vespa orientalis

  The Oriental hornet, scientifically named Vespa orientalis, is a captivating species of hornet that is indigenous to parts of the Middle East, North Africa, and extending into the Mediterranean regions of Southern Europe...
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  Oriental rat flea

  Xenopsylla cheopis

  The Oriental rat flea, scientifically known as Xenopsylla cheopis, is a small, wingless insect that plays a significant role in the transmission of various diseases, most notably the bubonic plague. This species of flea...
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  Orinoco crocodile

  Crocodylus intermedius

  The Orinoco crocodile (Crocodylus intermedius) is a fascinating and critically endangered species of crocodile found primarily in the Orinoco River basin in Venezuela and Colombia. This remarkable reptile is one of the...
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  Ornate paradisefish

  Malpulutta kretseri

  The Ornate paradisefish, scientifically named Malpulutta kretseri, is a captivating and relatively diminutive species of freshwater fish that belongs to the gourami family. This species is native to the tropical waters of...
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  Ortolan

  Emberiza hortulana

  The Ortolan, scientifically known as Emberiza hortulana, is a small, elusive bird that is a part of the bunting family Emberizidae. This species is renowned for its beautiful plumage, melodious song, and, unfortunately,...

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