- #1
Medicago
- 14
- 0
I have recently been to an exhibition of deep-sea life, some of the exhibited life forms live thousands of meters under the surface where sunlight does not penetrate, it is therefore that they rely entirely on geothermal vents as a source of energy, they have never been exposed to direct sunlight and neither, I suppose, did their ancestors. Looking at these creatures I couldn't help notice that, while some of them are entirely transparent and others are a bland shade of white or grey, as you'd expect in a light-less environment, there are a great number of richly coloured anemones and crabs. What is the purpose of this colour if there is barely any light to show it? Why would pigmentation develop in the first place?