DAVETHE DIVER GUIDE

Chapter 4: The Depths of the Lake

Use the Jungle Suit to photograph the Basilosaurus and defeat the Stethacanthus in the deep-lake cave.

2 missions · 8 objectives

Quick answer

Into the Depths of the Lake → The Cause of the Strange Phenomenon

Completion signal: Defeat and harvest the Stethacanthus, then report to Dr. Bacon.

Chapter 4 progress

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Official objective order

Chapter 4 missions

8 objectives

Official main-story mission

Into the Depths of the Lake

5 objectives
Into the Depths of the Lake objectives

Story goalUse Muna's Jungle Suit to investigate the deepest hydrogen-sulfide layer.

Walkthrough

  1. Leave Dave's house after the morning knock and meet Muna to receive the Jungle Suit.
  2. Enter the lake and descend through the previously inaccessible lower route.
  3. Continue to the ancient cave at the lake bottom while conserving oxygen and filter charge.
  4. Find the Basilosaurus lodged in the ancient gate and enter its photo zone.
  5. Complete the camera framing, then return to Utara Village and report to Dr. Bacon.

CompletionBacon's investigation points Dave toward the ancient shark causing the disturbance.

Official main-story mission

The Cause of the Strange Phenomenon

3 objectives
The Cause of the Strange Phenomenon objectives

Story goalEliminate the Stethacanthus and recover material for Bacon's investigation.

Walkthrough

  1. Return to the deep-lake cave prepared for a boss dive.
  2. Approach the anvil-backed shark to begin the Stethacanthus fight.
  3. Stay out of its charge line and attack during openings after its movement pattern.
  4. After the kill, interact with the body until the separate harvest condition clears.
  5. Leave the lake and report to Dr. Bacon.

CompletionBacon's report prepares the return expedition to Murau Temple.