In many locations, the action really picks up on the reef after the sun sets. Here are a couple of dive-light tips that can help you stay safe and get the most fun out of your next after-hours excursion.

• A primary dive light and a backup light. The primary light should be the larger and brighter of the two. When shopping for a light, try out several as some have different grips and handles to suit your personal preferences. Your backup--or pocket--light should be small enough to stow easily, yet bright enough to help you find your way back home. Most lights designed for this purpose are smaller and typically shaped more like a traditional flashlight. Make sure both lights come with a lanyard. Remember, though, that if the primary light fails and you switch to your backup, it’s time to end the dive.

To read about the newest dive lights on the market, see our 2011 Scuba Lab Review

• Reflective gear or tape. Many wetsuits, fins and masks have neon color accents, making it easier to spot divers in dark water. If your gear is mostly black, consider putting some reflective tape on it.