Nico Dives Cool Bali

Technical diving in Tulamben: Amazing Coral Reefs & Walls

Tech Diving at the Tulamben Drop-Off

We enter the water from the shore. We start the tech dive in a little bay and then head toward the drop-off, keeping the reef on our right shoulder. The coral wall starts at 16 meters and goes down to 60 meters. When we find the wall, we go straight down along the vertical and colorful coral wall of Tulamben.

We stay between 40 and 60 meters, depending on the dive plan. The wall is made of a lava flow covered in coral. The black volcanic sand contrasts with big, colorful gorgonian fans and huge sponges. We look for schools of fish, barracudas, octopuses, macro life, and sharks.

When the deep part of the dive is complete, we ascend along the colorful coral reef to complete decompression as effectively as possible. This is a nice and easy tech dive, and the conditions are always good here. It is a must-do tech dive in Tulamben.

Tech Diving at Batu Kelebit

We conduct this technical dive along a profound coral slope. To reach the site, we use a jukung (a local outrigger), which allows us to surface whenever necessary and simplifies dive logistics.

The reef here appears to descend infinitely into the depths, with the seafloor remaining well out of sight. The 45m–60m zone is the primary area of interest; here, we frequently observe cruising sharks, barracuda, and the elusive Mola-Mola.

Once the planned bottom time is complete, the ascent follows the coral slope upward. Decompression is spent exploring a colorful, shallow coral garden teeming with life. This stage of the dive is perfect for spotting nudibranchs, crabs, and scorpionfish among the rich coral formations.

Batu Kelebit is an impressive technical site where the conditions are typically calm and easy, making it an excellent choice for deep exploration.

Tech diving on Batu Nitti

Technical diving along a deep volcanic slope, ideal for dives within the 40 to 60 m range. The coral reel and the colors are stunning. The dark sand helps us find small macro stuff, but you should also keep an eye out for big fish in the deep water, like sharks and mola-molas.

It’s a very quiet dive site with great diving conditions. Technical diving gives you more time at depth, so you aren’t rushing. You can slowly hunt for small stuff and keep an eye out for big fish at the same time.”

Tech diving at Sidem

This tech dive site in Tulamben features steep walls of old lava flows, all covered in very colorful and very alive coral. It’s a perfect place for deep tech dives down to 40 to 60 m because you can reach parts of the reef that recreational divers never see. It is an easy and accessible dive site, making it a great site for testing your gear and practicing decompression diving in a very beautiful and safe technical underwater environment.

Tech diving at Segara (The 5 Fingers)

Tech diving along five lava flows from 40 to 60 meters, covered in rich coral. It feels like dropping into infinity. It’s a quiet place where tech divers can stay down longer to see the bigger stuff like sharks, turtles, and mola-mola Sunfish. It is an impressive dive spot for practicing technical navigation, using the five coral fingers to orient ourselves along the reef. On the deeper side, we keep an eye out for pelagics.

Our Tech Protocols

Built on precision. Our protocols are designed by tech divers who respect the depth.

● Depth Limits: Max 60 meters on Trimix; max 50 meters on Air.
● Gas Planning: Our protocols limit Air to a maximum of 50m; Normoxic Trimix is mandatory for any deeper profile to ensure total mental clarity. For those prioritizing absolute situational awareness, we offer the flexibility to transition to Trimix starting from 40m.
● Configurations: Full support for Twinsets, Sidemount, and CCR.
● CCR Support: We are AP Inspiration specialists. Sofnolime (Sorb), Trimix, and Oxygen fills are available.
● Gas Blending: Precision fills of Trimix and custom Nitrox/Deco gases up to 100% O2 from a reputable, high-standard station with strict filtration.
● Safety: We are located in Sanur, with quick access to the hyperbaric chamber in Denpasar.

Requirements & Booking

● Certification: Proof of Tech certification (SSI, TDI, PADI TecRec, IANTD, GUE, etc.).
● Insurance: Must cover technical diving depths.
● Check-out: A shallow check-out/weight-check dive may be required, depending on your recent experience.

Ready to go deep?