| From our saltwater aquarium. This is a worm that lives in (and creates) a tube; it has a crown of feathery wisps that it uses to extract phytoplankton and other nutrients from the water. It is light sensitive; if you pass a hand between the aquarium lamps such that it is shadowed, it will retract in a fraction of a second, leaving what looks like an empty tube. The feathers you see here are about two inches across, so it is quite large and easy to observe. #aquarium EXIF:
| Width: | | 1881 |
| Height: | | 1455 |
| Company: | | Olympus optical co.,ltd |
| Camera: | | E-20,E-20N,E-20P |
| Shot On: | | 2007:09:27 20:33:03 |
| Aperture: | | ƒ/2.4 |
| Exposure Time: | | 1/100th second |
| Exposure Program: | | Normal Program |
| ISO: | | 80 |
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