This week I bought a pretty powerful LED headlight with the hopes of getting some night rides on the mountain bike. But then Dan told me that with a powerful flashlight, you can see spiders at night. It's called spider sniffing and it's really cool, it does work !
You just walk around at night with your light mounted as close to your eyes as possible facing forward and when you look down into a field, you'll see the reflection of spider's retinas from really far away, even small ones. Because they have 8 eyes, chances are one of them is pointing your way and you'll see a reflection.
I managed to get a picture of what it looks like to spot one from far away. Click on the pics to see properly.



My setup for these shots was my Canon 60mm EF-S macro, plus diffused flash + LED headlight, so the lighting almost looks like daylight, but these were taken in pitch dark.