Night Diving: Your Guide to the Underwater After Dark

Night diving transforms familiar dive sites into alien landscapes. Creatures that hide during the day emerge, bioluminescence sparkles in your wake, and your torch beam reveals colors that sunlight can't reach at depth.

What You'll See

The reef comes alive at night with creatures you'll never see during the day:

• Octopus hunting across the reef
• Lobsters and crabs emerging from crevices
• Sleeping parrotfish in their mucus cocoons
• Bioluminescent plankton that glow when disturbed
• Hunting moray eels actively pursuing prey
• Spanish dancers (nudibranchs) — the largest and most spectacular

Essential Equipment

• Primary torch: Bright, reliable, fully charged
• Backup torch: Always carry a second light
• Glow stick/tank marker: Attached to your tank so your buddy can see you
• Compass: Navigation is harder at night

Techniques

1. Enter at dusk: Start your dive in twilight to adjust gradually
2. Stay shallow: 12-18m is ideal for night dives
3. Move slowly: You'll see more and use less air
4. Don't shine your light in eyes: Marine life and dive buddies alike
5. Turn off your light briefly: Wave your hand through the water to see bioluminescence

Safety

• Dive with a buddy or guide who knows the site
• Keep the shore lights or boat in sight
• Agree on torch signals with your buddy before the dive
• Surface with at least 50 bar remaining

Night diving is usually part of the Advanced Open Water course. If you haven't tried it yet, it might become your favorite type of diving!