Post I Jetty

A pleasant sandy slope in front of Menjangan Island’s ranger station — an often-overlooked site that rewards patient divers with critters under the jetty.

Overview

Post I Jetty sits directly in front of the West Bali National Park ranger station on Menjangan Island and is a gentle sandy slope with a good variety of hard and soft corals reaching to around 30 m. While it lacks the dramatic vertical walls of other Menjangan sites, the shallow area beneath the jetty is genuinely special for critter hunters — ornate ghost pipefish, pipefish, frogfish, and various nudibranchs inhabit the structures and rubble. The site works well as a final dive of the day, providing a relaxed, lower-intensity experience to complement the deeper wall dives at Pos 2 or Bat Cave earlier in the day.

Site Information

• Location: Menjangan Island, West Bali National Park, northwest Bali
• Entry Type: Boat dive
• Site Type: Reef
• Difficulty Level: Beginner
• Maximum Depth: 20 meters
• Typical Visibility: 10–25 m
• Current: Minimal
• Best Time: April to November

Marine Life

The jetty pilings host ornate ghost pipefish, pipefish, various nudibranch species, and small crustaceans. The sandy slope outside has garden eels, blue-spotted stingrays, and occasional cuttlefish. Lionfish rest under overhangs, and batfish congregate near the structure. Turtles are frequently seen on the reef.

Dive Profile

Descend under the jetty and spend time searching the pilings and rubble for cryptic critters before moving onto the sandy slope. Dive the slope between 8–20 m exploring coral heads and sandy patches. The dive is typically 45–55 minutes at a comfortable pace. Ascend slowly and complete a 3-minute safety stop.

Entry and Exit

Jukung boat from Labuhan Lalang. Entry at the jetty area. Currents are minimal at this site. Surface marker buoy recommended for boat pickup in open water.

Tips and Recommendations

• Check jetty pilings carefully for ghost pipefish — they are masters of camouflage
• Use this as the third dive of the day when bottom time budgets are tighter
• The site is excellent for Open Water training dives due to its calm, predictable conditions
• Garden eels are found in sandy patches at around 15 m
• Carry a small torch for illuminating crevices beneath the jetty

Safety Considerations

Currents are minimal but be aware of boat traffic around the jetty. Maintain good buoyancy near the jetty structure to avoid entanglement. Lionfish under overhangs are venomous — do not touch. Stingrays on the sandy bottom may be partially buried — shuffle feet if wading near shore.

Photography

The jetty creates an interesting structural dive shot opportunity. Macro photographers will enjoy the ghost pipefish, pipefish, and nudibranchs on the pilings. Garden eels on the sand require slow, patient approach for close-up shots. Cuttlefish in mid-water make excellent wide-angle subjects.

Sources: Menjangan Island Trip - Diving Sites, Geko Dive Bali - Menjangan, Mimpi Resorts - Menjangan Dive Sites. Last updated 2026-07-17.