One of the most impressive creatures in the ocean ... compared to the three colour-detecting receptors humans have: green, blue and red. Our three photoreceptors reveal a rainbow to us - but we can't ...

Overlooking the Red Sea, the King Abdullah Monument is a tower of blue and green. It’s on the site ... the shallow reef flats for undiscovered creatures. When they spotted an animal’s burrow ...

In the rocks and caves of Thailand, a “grass green” creature ... lead to a “light brick-red” tail, researchers said. The bottom of their bodies are a pale blue fading to bluish-green ...