Creatures of Light
If you get to New York this year, don’t miss the Natural History museum exhibit, Creatures of Light. A fantastic collection of modeled creatures showing bioluminescence; that is they light up like in Avatar.
What’s remarkable is the wide range of reasons why creatures light up. This Science article explains a few:
- An octopus’s suckers evolved into light organs, apparently to lure prey
- A jellyfish lights up blue, under attack–to lure predators to its attacker
- A fish eye fluoresces green and focuses the fluorescence onto its retina, for more sensitive detection
- Another jellyfish lights up as camouflage, to appear from below as the same brightness as light from above
Other interesting examples?