Blue blood may look alien, but it’s one of evolution’s most elegant solutions to life in extreme environments. Here’s how evolution rewrote the rules of oxygen transport.

Animals with blue eyes are a rare occurrence in nature due to being linked to recessive genetics, mutations, and specific genes. Despite that, many species still have beautifully rich blue eyes. While ...

The color blue is a very common favorite color for humans, but it is not seen in plants and animals very often. According to scientists from the University of Adelaide in Australia, this is partially ...

Blue is one of the rarest colors in the animal kingdom, and unlike other pigments found in nature, most blue creatures don’t actually produce blue pigment. Instead, their color comes from structural ...

Scientists bought a popular blue animal from a pet trader and discovered a new species from Indonesia, a study said. Photo shows a representative pet market. Photo from Y K yokeboy via Unsplash Far ...

Some animals do not have red blood like humans. From spiders to octopuses, their copper-rich blue blood helps them survive extreme environments. Here’s how it works and why it matters.

Scientists found a “metallic blue” animal mating in the Western Ghats mountains and discovered a new species, a study said. Photos from Ramasamy Naicker and Jebin Jose via Naicker, Chandrika, ...

Baleen whales don’t have teeth. Instead, they use baleen, a filtering system that lets the largest animals on Earth feed on ...