A red-filtered high-beam flashlight was used during nightly observations to minimize disturbance of insect visitors.
The problem is that our friends have only one flashlight with one battery that lasts for only 60 minutes (this is not a typo: sixty).
Moreover, to cross the bridge a flashlight is needed to avoid traps and broken parts.
A flashlight was used to locate the moths in the dark on the net.
At its centre the characters, who are naked, are caught repeatedly as frozen images in the flashlight of a camera or a torch.
Containers located in dark or shaded areas were also inspected using flashlights.
If you are standing behind the flashlight, you can see the eyes as bright red points even when the rest of the animal is invisible.
The flashlight casts a bright beam.
