I'm 6 dives into my week on Bahamas Aggressor II so I've got a bunch of pictures coming. Here's a sneak peek at a cool critter: the neck crab! This one is hanging upside down from a green sponge and is well camouflaged. They hang out into the water and grab stuff as it passes by. Very cool!

#underwaterphotography #critters #crabs #camouflage #scuba #nightdiving #olympus #om1

Night Diving in Komodo

Night diving in Komodo National Park, Indonesia reveals a completely different side of the reef. Species that remain hidden during the day emerge to hunt, feed, and interact in ways that are rarely seen under daylight conditions. What looks like a calm reef during the day becomes active and unpredictable after sunset.

This dive log captures several night dives in Komodo, where the focus shifts from wide-angle reef scenes to macro life, nocturnal predators, and unusual behaviors. For divers and underwater photographers, night diving here is less about big animals and more about discovering species that are often missed entirely during daytime dives.

I spent a week aboard the Indo Aggressor, based in the Indonesian city of Labuan Bajo. During the week at sea, guests were offered daily night dives. I dived each night and saw many unique critters and interesting behavior underwater. The video below highlights some of the cool moments during our night dives.

https://youtu.be/pfzre18odHs

Marine Life You Can See on a Komodo Night Dive

Night diving in Komodo is primarily about macro and behavior-focused encounters. Many of the species observed during these dives are rarely seen in daylight or behave completely differently after dark.

Common sightings include:

• Decorator Crab
• Bigfin Reef Squid
• Painted Frogfish
• Blue-Spotted Stingray
• Spotted Flathead (Crocodilefish)
• Needle Cuttlefish
• Stingray vs. Cuttlefish
• Spanish Dancer (Super Large Nudibranch)
• Komodo Reef Octopus
• White-Spotted Hermit Crab
• Whitemargin Stargazer
• Broadclub Cuttlefish
• Lacy Scorpionfish (Rhinopias)
• Bigfin Reef Squid

Some dives may also reveal nudibranchs, flatworms, and other small invertebrates moving across the reef. The slower pace of night diving makes it ideal for spotting these smaller subjects.

Dive Conditions and Safety Considerations

Night diving requires a different mindset than daytime diving, especially in a place like Komodo. While currents are generally reduced at night, divers still need to be aware of changing conditions, entry points, and navigation limits.

Key conditions:

• Depths: 20–60 feet (6–18 meters)
• Water temperature: 79–84°F (26–29°C)
• Visibility: 30–50 feet (9–15 meters)
• Current: Mild to moderate depending on site

Divers should carry at least one primary dive light and a backup. Maintaining close proximity to the guide is critical, as visibility is limited to your torch’s beam. Good buoyancy control is especially important to avoid disturbing marine life or damaging coral.

Best Time of Year for Night Diving in Komodo

Night diving is possible year-round in Komodo National Park, but overall conditions vary by season.

• April to November (Dry Season):
  Best overall conditions with calmer seas and more predictable diving
• December to March (Wet Season):
  Increased plankton and nutrients can improve marine life activity, but surface conditions may be less stable

Because night dives are typically conducted in sheltered areas, they are less affected by wind and waves than daytime dives. This makes them a reliable option even when daytime conditions are marginal.

I previously posted a few exciting moments during the entire dive trip here. Also, I posted a few photographs from the trip here. In a few weeks, I will post my travel and liveaboard trip report.

I find night dives interesting because you can see animals that you don’t see during the day. Below is a video playlist that hosts a few more night dives from around the world. There are a few interesting clips from Roatan, St. Kitts, Raja Ampat, and the Bahamas.

https://www.youtube.com/playlist?list=PLiWEPZWTMPV87HXp6ka0iHdZa0EeDFhem

Here’s my underwater camera set-up.

FAQs

Night dives in Komodo commonly reveal octopus, moray eels, decorator crabs, boxer crabs, nudibranchs, cuttlefish, and hunting lionfish, many of which are rarely active during the day.

Yes, most night dives in Komodo are conducted in protected, shallow sites with mild currents, typically between 30 and 80 feet, making them suitable for divers with basic experience and good buoyancy control.

Night diving is available year-round, but April through November offers the most stable conditions, while December through March may provide increased marine life activity due to higher nutrient levels.

Fluorescent Friday : Hurghada Departure

Some creatures underwater have the ability to absorb light and re-emitted at a longer wavelength.

Using a yellow filter scuba divers can observe this awesome aspect of nature. The filter can be attached to a divers mask. Underwater photographers and videographers will also need to add a yellow filter to their camera lens to capture the light spectrums.

These underwater photography were taken during night dives in the Red Sea, off the coast of Egypt.

Here are more details about my camera set-up and approach to capturing fluorescent images during night dives.

Fluorescent Friday

https://youtu.be/Boz2sfnyIFo

I have always been intrigued by how and why some creatures fluoresce above and below the waterline.

Biofluorescence is the absorption and reemission of light from living organisms. Fluorescent organisms have proteins built into their skin or other tissues that absorb energy from light and reemit it as a different colors. This results in a wonderful display of color.

In the ocean, blue light penetrates through the water, where some organisms absorb that energy, and then emit light at a lower energy in colors such as green or red. This article from Dive Photo Guide dives into the science of fluorescence as it applies to underwater photography.

Scuba divers need special yellow filters to see the reemitted light. In addition to my normal camera set-up, I used a blue light, and yellow filters on my camera lens and on my mask. Below are the additional items I used to capture the video above.

• Sealife Sea Dragon Mini Fluoro Light
  • This light came with yellow filter for a scuba diver’s mask.
  • Since this was my first experience with fluoro diving and I was not sure how it would work. I selected a lower end mini model and was pleased with the results. However, if I have the opportunity to upgrade, I would go with the higher model that has a wider beam range. For non-photographers/videographers, the mini would suit them well.
• Tiffen Yellow Filter
  • The yellow barrier filter blocked any reflected excitation light and transmit only the fluorescence from the subject.
  • Basically, allowed me to record exactly what I was seeing through the mask filter.
  • It’s a wet lens, so I just attached it to the front of my underwater camera housing.

I shot this video off the house reef at Six Senses Laamu Resort during our first night dive there. The Laamu Atoll is located in the Maldives.

Overall, I was amazed by the color captured during the night dive. I will plan to try again on my next night dive. Hopefully, I can schedule the night dive around coral spawning. This is the time when corals colonies reproduce by releasing their eggs and sperm all at the same time. However, with a global pandemic, I’m not sure if I’ll be able to coordinate this year.

Night Scuba Diving: Tips, Videos & Nocturnal Reef Life

Why Night Diving Feels Creepy (But Isn’t)

Let’s be honest: diving into dark water in the middle of the ocean feels a little creepy. For many divers, the apprehension of low-light conditions is enough to keep them on the boat. But as a cinematographer, I’ve found that the reef’s true personality only emerges after the sun goes down. Once you witness a Moray Eel on a frantic hunt or a Spiny Lobster using your video lights as a tactical advantage, that “creepy” factor is quickly replaced by pure fascination. You won’t just be diving; you’ll be watching the reef’s night shift in action.

Night Dive Videos: Nocturnal Action Worldwide

https://youtu.be/aTayU_MJc9Y

I enjoy night dives on reefs filled with nocturnal activity. Night dives are unique experiences that I find incredibly intriguing. Reefs filled with marine life during the day are also filled with marine life at night. Typical daytime animals find resting places, while a new set of nocturnal marine animals emerges on the reef.

In the two underwater videos below, I saw an Eel hunting on the house reef. This occurred at the Divi Beach Resort in Bonaire. I also saw a Spiny Lobster in Honduras. The lobster was taking advantage of my video lights and eating tiny sea flies/lice. (Thanks to the guides at West End Divers.)

https://youtu.be/GczqiZKaesI

https://youtu.be/f4EgJcd_bNU

Many dive operators/shops take divers out as soon as the sun sets. I prefer to wait a few hours. This allows all underwater daytime animals to find resting places. It also allows nocturnal animals to slowly emerge.

https://youtu.be/Me4quIKtbPs

I also enjoy a good dawn dive. During this time, nocturnal marine creatures are scrambling to find their last meal of the day. They are also looking for a final resting place for the morning. It’s an amazing experience to dive underwater in total darkness. Slowly, you watch the reef get brighter or more visible as the sun rises. I definitely recommend trying a dawn dive if a diver has apprehensions about night diving. But you have to wake up earlier to take advantage of this window.

Night dives along sandy bottoms can also offer unique opportunities to watch marine life. In the Bahamas, around the Exuma Islands, we observed this Channel Clinging Crab.

https://youtu.be/6KPVFVpUdc8

5 Essential Night Diving Safety Tips

• Try to dive the site during the day to find landmarks. This helps navigation tremendously at night. Learning the layout of a site helps reduce the chances of becoming disoriented.
• Bring a backup light if possible.  Attach it to yourself, just in case it gets knocked away.
• Follow your dive plan and adhere to the buddy system.  Communication with a buddy is not the same as during the day.
• Don’t shine your light on day animals.
• Find a good guide. Most of the time, they know where the fascinating creatures live.

https://youtu.be/D3vWJhLwqkw

FAQs

Night dives generally take place at the same recreational depths as day dives. These depths are often between approximately 5 and 30 meters (15–100 feet). The exact depth depends on dive site conditions and the diver’s certification level.

Night diving can be safe for divers with appropriate training and experience. It is particularly safe after a daytime dive at the same site. Proper preparation, clear communication, and familiarization with dive lights reduce risk in low visibility.

Night dives often reveal nocturnal creatures. These include moray eels, crabs, shrimps, and cuttlefish. You also see sleeping fish tucked in coral and bioluminescent plankton. These behaviors are rarely visible on daytime dives.

Reviews: Dive Resorts, Liveaboards and Dive Shops

• Nautilus Explorer Liveaboard Review – Socorro Islands, Mexico

• Atlantis Charters Review – Atlantic Beach, North Carolina

• Liquid Dive Adventures Review – Tofo Beach, Mozambique

• Tobago Dive Experience Review – Speyside, Tobago

🌙 There’s something magical about night diving—especially at the West Rock Shipwreck! Euro-Divers Meeru shares why this mysterious, otherworldly dive site is one of their favourites for exploring the ocean after dark. 🔦🌊 #NightDiving #ScubaMagic #EuroDivers #Meeru #ScubaDiving #TheScubaNews

🤿 👉 https://www.thescubanews.com/2025/04/12/night-dive-at-west-rock-shipwreck/

Encountering the Enigmatic: A Mesmerizing Octopus Night Dive

We were on our way back to the boat, navigating through the serene darkness of the underwater world, when movement along the sandy sea floor caught our eye. It was an octopus, gracefully gliding across the sand, its body shifting and flowing with a life of its own.

https://youtu.be/nyacibX52qI

Captivated, we paused, giving ourselves a few more minutes under the sea to witness this remarkable creature in its natural habitat. The octopus, seemingly curious about the group of human visitors, showed a particular interest in our camera. With an almost playful air, it approached, extending its tentacles towards the lens as if to inspect this odd, glowing object in its domain.

This encounter was not just a mere observation; it felt like a mutual exploration. The octopus, with its intelligent gaze, seemed as intrigued by us as we were by it. For a brief moment, the barriers between species blurred, and there was just the shared curiosity, a silent communication beneath the waves.

Our time with the octopus was brief, but the impression it left was indelible. As we made our way back to the surface, the experience lingered with us—a poignant reminder of the wonders that lie hidden in the depths, waiting to be discovered.

The ocean at night is a different world, full of mysteries and marvels. And on that night, off the coast of Grenada, it gifted us with a glimpse into the life of one of its most fascinating creatures.

More Octopus Images From the Logbook

• Octopus Behavior Across Three Seas (Grenada to Indonesia)

• Blue-Ringed Octopus: Small, Stunning, and Seriously Dangerous

• Seagrass Nomad: Octopus Discovers a Shipwreck Sanctuary