About this spot
Kakaban Jellyfish Lake sits on Kakaban Island in the Derawan archipelago of East Kalimantan, Indonesia. This unique freedive destination offers a rare chance to swim among millions of golden jellyfish in a landlocked lake connected to the sea. The lake's shallow depth—reaching only 8 meters at its deepest—makes it ideal for beginners and snorkelers alike. The water stays calm and protected year-round, requiring minimal current management. The main draw is the jellyfish themselves. Golden jellyfish (Mastigias papua) dominate the lake, and their sting is weak enough that most divers can safely encounter them without exposure protection, though wetsuits are recommended. The jellyfish mass migrate daily, following sunlight patterns, so timing your dive around their movements increases your chances of dense encounters. Access involves reaching Derawan Island first, then taking a boat to Kakaban. The lake itself is accessible via a short jungle trek and wooden platforms. Water temperature and exact visibility vary seasonally, so check local conditions before booking. The site works year-round, though many operators report better jellyfish activity during certain months—confirm with local guides on arrival. This is a low-impact, beginner-focused experience. Depths never demand technical skill, and the novelty of the jellyfish lake often outweighs typical dive metrics like coral or reef fish diversity.
📖 Guide: Diving in Indonesia: 323 Sites, Mantas to Micro-critters
Best months
Dive types
Trip essentials
Everything you need before you pack — checklist, sun, logistics.
Trip checklist
- 🛂 Visa-free or visa-on-arrival
- 📜 C-card + dive insurance (DAN)
- 📔 Dive logbook
- 🧴 Reef-safe sunscreen SPF 50+
- 🔌 Plug type C/F · 230V adapter
- 💊 Seasickness meds + ear drops
- 📱 Offline maps + emergency contact
Quick facts
- 🌘 Moon Waning crescent · 38%
- GPS
› Sustainability disclosures
From your departure country
- Visa: Visa on arrival · 30 days max
- Flight: 12h · direct
- Jet-lag: 12h east · 8 days recovery
FAQ
›When is the best time to dive Kakaban Jellyfish Lake?
The lake operates year-round, but jellyfish density and behavior shift seasonally. Local operators in Derawan can advise on current conditions. Plan at least 2–3 days in the area to catch peak jellyfish activity and favorable weather.
›How deep is Kakaban and is it suitable for beginners?
Maximum depth is 8 meters, making it one of the shallowest saltwater freedive sites. It's ideal for beginners, children, and snorkelers. No advanced breath-hold skills or deep equalization are needed.
›What marine life will I see?
Golden jellyfish are the main attraction. The lake also holds small reef fish, though diversity is limited compared to open reefs. The jellyfish migration and behavior are the primary focus.
›How do I access Kakaban Jellyfish Lake?
Fly to or arrive in Derawan Island. Arrange a boat from Derawan to Kakaban Island, then hike through jungle to reach the lake platforms. Local tourism operators and guesthouses in Derawan handle bookings and logistics. No special permits are required for recreational visits.
