GTA Underwater Bases Secrets Ocean Mysteries
GTA guides ⏱ 7 MIN READ UPDATED June 21, 2026

GTA Underwater Bases Secrets Ocean Mysteries

A practical the GTA series guide to GTA underwater secrets - prerequisites, the exact sequence, payouts and fixes for when it fails.

AR
Alex Rivera
Classics, mods, cheats and vehicles editor
Published: June 14, 2026 at Jun 14, 2026 5:09 AM
Last checked: June 21, 2026 • 1399 words
Collectibles and secrets THE GTA SERIES
Introduction

Picture the usual evening: you have an hour in the GTA series, a vague memory of how GTA underwater secrets works, and a friend who swears it changed. One of you is right, and the table below says which.

Rockstar hides GTA underwater secrets in places that reward curiosity - rooftops, sea floors, the backs of billboards - and the reward is usually a vehicle, a mission or a trophy you cannot get any other way.

For GTA underwater secrets the useful information fits on one screen; the remaining sections explain the edge cases.

  • Where to verify every claim yourself
  • Platform differences that change the inputs
  • A step-by-step method tested on the current build

Prerequisites

Have these sorted before you begin; they cannot be fixed mid-run:

  • A checklist for untracked sets
  • An hour or two per full set
  • A helicopter or plane for rooftop and mountain items
  • Story progress to the point where the relevant character or equipment is available

Doing GTA underwater secrets the right way

Treat this as a checklist on the first run and a reminder on every run after:

  1. Check the trigger conditions for GTA underwater secrets: time of day, weather, 100% completion, a specific protagonist or a mission already finished.
  2. Set up: use a save with 100% if the secret needs it, set the time by sleeping at a safehouse, and arrive before the window opens.
  3. Approach the way guides specify - the Mount Gordo ghost appears between 23:00 and 00:00 and vanishes if you get close; the Fort Zancudo UFO sits at 3:00 above the base.
  4. Verify against a dated source, because mods and fan videos have added fake secrets that spread faster than the real ones.

If a step fails, the troubleshooting notes further down cover the usual causes.

Pro tips for ocean secrets GTA

Shorter notes, each one worth a minute:

  • →Director Mode lets you preview reward vehicles before you earn them.
  • →The golden peyote needs 100 percent completion, foggy weather and the early-morning window on specific days.
  • →Military base entry: Fort Zancudo gives four stars on entry; approach from the northern cliffs and drive straight to the hangar.
  • →Sonar on the submarine beeps faster as you near a collectible.
  • →Bigfoot: as Franklin, 'The Last One' Strangers and Freaks mission unlocks at 100% and has you hunt the Sasquatch.

Our guide to GTA Bigfoot goes through the same ground from the other direction.

Checklist: GTA underwater secrets

Print this or screenshot it; it is the page in miniature:

  • ☐Record or screenshot immediately; some secrets despawn after one trigger per in-game day.
  • ☐Move to related secrets nearby; Rockstar clusters them (Mount Chiliad, the Alamo Sea...
  • ☐The underwater UFO wreck north of Paleto Bay needs no conditions - it is always there for anyone with a sub or scuba gear.
  • ☐Franklin's Chop can bark near some hidden items in the Chop app era.

GTA underwater secrets: the numbers

These are the figures we check against after each update:

Set reference
SetRewardNotes
50 Hidden PackagesUnderwater cash bundlesNot required for 100 percent
25 Under the BridgeLow-altitude flights under bridgesAny helicopter is easiest
30 Nuclear Waste barrels23,000 dollars each plus a 250,000 dollar bonus for all 30Needs the Sonar Collections Dock and the submarine
50 Spaceship PartsOmega's strand; reward is the Space DockerFar Out mission starts it
5 Epsilon TractsPart of the Epsilon Program strandMichael only
50 Letter ScrapsLeonora Johnson murder; reward is the A Starlet in Vinewood missionAny character
10 Monkey MosaicsReward is the Go Go Monkey BlistaNext-gen versions only
50 Stunt JumpsCounts toward 100 percent; 25 requiredAlso shown on the in-game map after discovery

Three rows carry most of the weight: 50 Hidden Packages, 25 Under the Bridge and 30 Nuclear Waste barrels. The remaining entries explain the exceptions.

Avoid these with GTA underwater secrets

These are the errors we see most often with GTA underwater secrets:

  • Collecting with one character when the set is character-specific
  • Assuming an online guide's numbering matches the in-game order
  • Walking up to the Mount Gordo ghost; it disappears when approached
  • Searching for the jetpack from the Chiliad mural; it was never in story mode
  • Looking for UFOs without 100% completion - the Zancudo and Chiliad craft need it

Several collectible sets unlock exclusive rewards - the Space Docker, the Go Go Monkey Blista, a 250,000 dollar bonus for nuclear waste - that never appear otherwise.

The dates and prices here are shared with best settings GTA 5; if one changes, both pages are updated.

Go deeper

Further reading on the GTA series, picked for overlap with GTA underwater secrets rather than popularity:

When it does not work

Before you report a bug, try these:

ProblemFix
Reward did not unlockSome rewards require a follow-up call or mission after the last item.
Item not spawningCheck character, time, weather and whether the required strand is active.
Counter stuckReload the save and revisit the location; a few items register only after a reload.

Which approach fits you

Different starting points call for different GTA underwater secrets plans:

Condition checklist

List the trigger conditions, set them all, then go. Most 'it did not work' reports are one missing condition.

Underwater sweep

The Kraken or Dinghy for the sunken UFO off Paleto Bay, the hidden packages and the shipwrecks; the Zodiac Dinghy is enough.

Myths vs facts

Popular belief versus what the game actually does:

ClaimReality
The Chiliad mural hides an unsolved jetpack puzzleRockstar added the jetpack to GTA Online instead; the mural's known elements have been found.
You need every collectible for 100 percentOnly specific sets count; hidden packages and others are optional.
Bigfoot roams randomlyHe appears in a scripted mission and as a peyote transformation under specific conditions.

Why GTA underwater secrets matters in 2027

The Mount Chiliad mural sent players searching for a decade; the resolved parts (UFOs, the Sasquatch, the hidden UFO wreck) are all repeatable with the right conditions, and the unresolved parts are probably art, not puzzle.

Collectibles count toward 100 percent, which is required for the golden peyote and a handful of other secrets.

  • ✗Not saving between regions
  • ✗Trusting modded videos of secrets that do not exist in the base game
  • ✗Skipping the submarine and trying to free-dive to deep items

Context before tactics

Rockstar's secrets fall into three kinds: scripted (the Mount Gordo ghost appears every night), conditional (UFOs need 100% completion) and misread (random shadows and textures). GTA underwater secrets needs to be sorted into one of those before you spend time on it.

The Mount Chiliad mural sent players searching for a decade; the resolved parts (UFOs, the Sasquatch, the hidden UFO wreck) are all repeatable with the right conditions, and the unresolved parts are probably art, not puzzle.

GTA underwater secrets is one of those tasks where a plan saves hours: the items are fixed, the map is big, and the only variable is the order you visit them in.

Collectibles count toward 100 percent, which is required for the golden peyote and a handful of other secrets.

Who this is for

New and returning players: the steps assume nothing, and the tables give veterans the numbers they came for.

A common follow-up is GTA 100 percent easy; it uses the same session setup.

Final word

Strip GTA underwater secrets down and it is a handful of facts and one sequence. The facts are in the table; the sequence is in the numbered list. Everything else on this page is insurance.

The GTA 6 trailers show a map with wetlands, keys and small towns - exactly the terrain Rockstar likes to hide collectibles in. Expect a far larger hunt after November 19, 2026.

For the next step, see best GTA cheats and best radio stations GTA.

Frequently asked questions about GTA underwater secrets

Is there a video version of this GTA underwater secrets guide?
Where a video adds something the text cannot show, it is embedded on this page; otherwise the steps and tables above are the complete guide.
Do I need the submarine?
For underwater sets, yes; the Sonar Collections Dock sells one and the Kraken is a story unlock.
How do I enter Fort Zancudo without dying?
Come over the northern cliffs in a fast car at night, head directly to the hangar for the Lazer or the Rhino, and leave immediately; four stars are unavoidable.
What do I get for completing GTA underwater secrets?
Depends on the set - vehicles, missions, cash bonuses or progress toward 100 percent.
Do I need 100% completion to see UFOs in GTA 5?
For the Fort Zancudo, Mount Chiliad and Sandy Shores UFOs, yes. The sunken UFO off Paleto Bay has no requirement.
When does the Mount Gordo ghost appear?
Between 23:00 and 00:00 in-game, on the cliff edge of Mount Gordo. It vanishes if you approach.
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