Drift procedures: negative entries, stay streamlined, and use SMBs for any open-water ascent.
Downcurrent awareness near channel corners and drop-offs; stay close to terrain and avoid edges if signs appear.
Brief blue-water pickups and boat signals; traffic can be heavy at popular bays.
Thermal protection: water can drop to 16°C in season.
Cancel or pivot if swell closes the south coast.

Two hyperbaric resources serve Bali: Prof. Dr. I.G.N.G. Ngoerah Hospital (Sanglah) in Denpasar and Kasih Ibu Hospital Saba near Gianyar. Carry dive insurance with emergency hotline numbers. Boats and beaches have variable response times, so prevention and conservative calls matter.

Crystal Bay and channel corners can produce sudden downflow. Stay tight to terrain, monitor gas, and deploy SMBs if separated.

Swell and surge can make Manta Point unsafe; operators may cancel on the day. Have backup north-coast plans.

Drift procedures: negative entries, stay streamlined, and use SMBs for any open-water ascent.
Downcurrent awareness near channel corners and drop-offs; stay close to terrain and avoid edges if signs appear.
Brief blue-water pickups and boat signals; traffic can be heavy at popular bays.
Thermal protection: water can drop to 16°C in season.
Cancel or pivot if swell closes the south coast.

Crystal Bay and channel corners can produce sudden downflow. Stay tight to terrain, monitor gas, and deploy SMBs if separated.

Swell and surge can make Manta Point unsafe; operators may cancel on the day. Have backup north-coast plans.

Popular bays can be crowded. Surface with SMBs, listen for engines, and follow boat pickup signals.

Steep, patchy roads make scooters risky for beginners. Carry water, wear helmets, and consider a driver for long loops.

The Nusa Penida MPA protects reefs, mantas, and molas with zoning and patrols. Respect moorings, do not anchor on reef, and pack out all trash.
Manta and mola codes of conduct: minimum 3 m distance, never touch or chase, never enter cleaning stations, do not block animals, avoid flash photography.
Support operators aligned with Green Fins and local conservation groups.

Contact	Role	Phone	Availability
DAN Emergency Hotline (Indonesia)	Diving medical assistance 24/7	+62 21 5085 8719	24/7
Prof. Dr. I.G.N.G. Ngoerah Hospital, Denpasar	Hyperbaric and tertiary care	+62 361 227912	Mon-Sun, hospital emergency department 24/7
Kasih Ibu Hospital Saba, Gianyar	Hyperbaric & Diving Medicine Centre	+62 361 3003333	By appointment; ER 24/7

Nusa Penida

Safety And Conservation

Top Risks

Dive safety

Snorkel and freedive safety

Safety And Conservation

Top Risks

Dive safety

Snorkel and freedive safety

Wildlife and protected areas

Emergency contacts