GTA 5 Shipwrecks and Hidden Underwater Treasures: The Complete Guide

Los Santos and Blaine County sit on top of an ocean floor Rockstar built almost entirely for players who bother to look. Beneath the waves of GTA 5 you will find shipwrecks with cash inside, a sunken nuclear submarine, thirty scattered submarine parts tied to a Stranger and Freaks mission, a stack of whale bones that fans insist are Kraken remains, and a lit-up hatch straight out of Lost. None of it is signposted. Here is what is actually down there and how to find it.

The essentials

• Random shipwrecks spawn along the coast daily, each with a treasure chest worth $20,000 and 2,000 RP.
• Thirty barrels of nuclear waste are scattered across the seabed, each worth $23,000, with a $250,000 bonus for finding all of them.
• Thirty submarine pieces belonging to the late Frank Mathers are hidden underwater for Abigail Mathers' mission strand, unlocked after the Merryweather Heist.
• Named wrecks include a split-in-two nuclear submarine off Mount Gordo and a large tanker south of Elysian Island.
• The ocean floor also hides two enduring myths: the "Kraken" bones and the glowing underwater hatch.
• You cannot dive past roughly 90 meters (about 300 feet) without being crushed, so some of the deepest secrets are only visible in a submersible.

The daily shipwrecks and their $20,000 chests

GTA 5's coastline can spawn a small wrecked boat at any of around thirty possible points along the shore, and which one is active changes with the in-game tides. Swim or drive up to the wreck and you will usually find a treasure chest sitting right next to it. Breaking it open pays out $20,000 and 2,000 RP, no heist setup required, just a boat or a Scuba outfit and a bit of coastline patrol.

It is a minor money method next to Los Santos' stock market plays, but it costs nothing and rewards players who actually explore the map instead of fast-traveling everywhere.

Nuclear waste: 30 barrels and the Sonar Collections Dock

A more serious underwater collectible hunt involves thirty barrels of nuclear waste scattered around the map. To collect them, you first need the Sonar Collections Dock in Paleto Cove, a $250,000 property that unlocks once Michael has completed the Merryweather Heist in the main story. From there, the dock crew will ping barrel locations for you to dive down and grab.

Each barrel is worth $23,000, and collecting the full set of thirty triggers the Waste Management achievement/trophy along with a $250,000 completion bonus, on top of what you already banked per barrel. It is one of the better payouts among GTA 5's collectible chains, and it doubles as a reason to actually explore corners of the coast most players never visit outside of missions.

Abigail's 30 submarine pieces

The most story-connected underwater hunt belongs to Abigail Mathers, a Stranger and Freaks character who asks Michael to recover thirty pieces of a submarine that belonged to her late ex-boyfriend, producer Frank Mathers. The pieces are scattered near plane and ship wreckage around San Andreas, and a sonar ping on the radar tells you when you are close to one. Sharks are a real hazard here, so keep an eye on your surroundings while diving. Exiting a Dinghy or the Kraken's Mini-submarine at sea also gives you scuba gear on the spot, saving a trip back to shore.

Once all thirty pieces are turned in, Abigail calls you to Paleto Cove for the final mission, "What Lies Beneath." The reward is famously anticlimactic: ten dollars and a signed photo of Frank. It is one of GTA 5's better running jokes, and we cover the exact spawn points in our complete submarine parts location guide.

Notable named wrecks worth the swim

Beyond the collectible chains, a handful of specific wrecks are worth visiting just to see them:

• The nuclear submarine off Mount Gordo. Found northeast of Mount Gordo, this vessel is broken into two pieces, apparently from an explosion in the engine compartment, and its design leans closer to a World War II-era sub than anything modern.
• The tanker south of Elysian Island. A large wrecked tanker ship rests in the Port of Los Santos, one of the biggest single wrecks in the game.
• The cargo plane crash west of Fort Zancudo. Broken into two sections with weapons scattered around it, the wreck reads like a failed smuggling run gone wrong right next to the military base's own secrets.
• Military debris east of Humane Labs. Sunken Barracks trucks, a Rhino tank, and vintage armor wrecks sit clustered together, hinting at some kind of past battle nobody in-game ever mentions.

Legends of the deep: the Kraken and the Lost hatch

Two underwater spots exist purely to feed player speculation. West of Los Santos, a pile of bones rests on the seafloor. Datamined assets confirm they are whale bones, but the location and staging fed years of theories about a sea monster living in San Andreas' waters, a myth we break down fully in our GTA 5 Kraken explainer. It sits alongside GTA 5's other running mysteries, like the Mount Chiliad puzzle and the game's UFO sightings.

Off the east coast, divers can find a small circular structure built into the seabed, complete with a rectangular window that lights up as you approach. Fans widely read it as a nod to the hatch from the TV show Lost, and Rockstar has never confirmed or denied it, which is exactly the kind of ambiguity that keeps GTA 5's easter egg community digging thirteen years later.

How deep can you actually go

There is a hard limit to all of this exploring. Past roughly 90 meters (300 feet) of depth, the game starts crushing the player, and you will die within seconds if you do not surface. That ceiling is why some of San Andreas' wrecks and props are effectively unreachable without mods, and why the deepest stretches of ocean remain the least documented part of the map, right up there with the rest of the game's best secret locations.

Do you need the Sonar Collections Dock for all of this

No. The Sonar Collections Dock is only required for the nuclear waste barrels. Random shipwreck chests and the named wreck sites are visible to anyone with a boat, scuba gear, or a Submersible and enough patience to swim the coastline. Abigail's submarine pieces need the Merryweather Heist completed first, but not the Dock itself.

Thirteen years after launch, GTA 5's ocean floor is still one of the least-traveled parts of San Andreas, and that is exactly why it rewards a proper look.