[GodGunsGuts]

The more I study nature, the more I am forced to confess we are fearfully and wonderfully made!

[Red Badger]

[KarlInOhio]

It's interesting that the light doesn't help the sponge directly because it is an animal so it doesn't use light for photosynthesis, but rather the light is for other symbiotic organisms living inside the sponge.

[ClearCase_guy]

When we do it, it's Intelligent Design.
When a sponge does it, it's just a random mutation which happened to provide a benefit worth keeping for hundreds of millions of years. Just dumb luck, really.

[R_Kangel]

Sponges Use Fiber Optics for Interior Lighting (to harvest energy!)

Of course not all sponges do this. The Welfare Sponge harvests handouts from the taxpayer and sucks the economy dry.

[tumblindice]

I wondered why my brother-in-law seemed to glow. I thought it was his drinking.