In case you wonder, you are now staring a starfish right in the mouth. No, I have not started deep sea diving with a starfish clutching my camera's lens as a result. I found it "climbing" this not-so-clean plexiglass wall inside The Bergen Aquarium, which I visited the other day.
For the technically interested, the photo was shot handheld with a Canon EOS 7D fitted with a Sigma 70mm macro lens with ISO 3200, F. 3.2, and speed 1/100sec. Ambient light (halogen spots). Estimated distance 30 cm.