Nature’s coolest hue: 10 animals that are naturally blue
Blue poison dart frogNative to South America, this tiny, electric-blue frog warns predators of its toxicity. Its vivid skin is both a defence mechanism and a striking natural wonder.
Blue jayThis North American bird flaunts vibrant blue feathers with black and white markings. Known for intelligence and mimicry, its colour comes from light refraction, not actual pigment.
Blue morpho butterflyFound in Central and South America, its iridescent blue wings shine due to microscopic scales. When flying, it flashes blue and brown, thus, confusing predators.
Mandarin dragonetDespite its name, this small reef fish sports bright blue wavy patterns. Found in the Pacific, it’s admired in aquariums for its psychedelic, glow-like colouration and peaceful behaviour.
Blue tang (Dory Fish)Famous from Finding Nemo, the blue tang has a royal blue body and yellow tail. It lives in coral reefs and plays a key role in algae control.
Hyacinth macawThe largest flying parrot, it boasts deep cobalt-blue feathers and yellow-ringed eyes. Native to South America, it’s endangered due to habitat loss and the illegal pet trade.
Ulysses butterflyThis Australian butterfly is known for its dazzling metallic-blue wings. Its bright colour helps it attract mates and blend with the vibrant rainforest canopy.
Blue sea slug (Glaucus atlanticus)Also known as the blue dragon, this floating sea slug has a surreal, shimmering blue body and feeds on venomous jellyfish, storing their toxins for self-defence.
Blue iguanaNative to Grand Cayman, this rare iguana turns a brilliant sky blue in adulthood. Once critically endangered, it’s now recovering thanks to conservation efforts.
Peacock (Indian Blue)The Indian peacock’s dazzling iridescent blue neck and fan-shaped tail make it a symbol of beauty and pride. Its colouration comes from microscopic structures that reflect light, not pigment.