How did Earth become so colourful? Here's what research shows
Origins of vision
Vision first evolved in organisms to detect light and dark around 600 million years ago.
Cambrian Explosion
About 541 million years ago, the Cambrian explosion marked a surge in life diversity and the development of advanced vision.
Trichromatic vision emerges
Trichromatic vision, detecting red, green, and blue, evolved around 500 million years ago in arthropods.
Role of Arthropods
Early arthropods were the first to develop trichromatic vision, enabling them to detect predators and prey more efficiently.
Evolution in Vertebrates
Trichromatic vision appeared in vertebrates about 420-500 million years ago, aiding survival.
Advantage of Compound Eyes
Fossil evidence shows that trilobites had compound eyes, enhancing motion detection and visibility in dim environments.
Cambrian impact on colour
Show underwater life from the Cambrian period with distinct colours.
How colour became survival tool?
Vision allowed species to detect food, mates, and threats, pushing the need for more vibrant hues.