How much of GTA 6's map is ocean and underwater?
The amount of ocean and explorable underwater space in GTA 6 is unknown. Official material confirms coastal and island regions, but not map dimensions, diving, or seabed content.
Verdict: Rumored. GTA 6 clearly has substantial coastal geography, but Rockstar has not revealed how much of the map is ocean or whether its underwater areas are designed for extended exploration. Any percentage or square-mile estimate is unsupported.
What we know about the coastline
Vice City is a coastal metropolis, and the Leonida Keys are an officially named island chain to the south. Trailers show crowded beaches, boats, waterways, and airboats in Grassrivers. Port Gellhorn is described as a gulf-coast port town. Together, these facts establish that water is important to Leonida’s identity and travel.
They do not reveal the map boundary, the distance between regions, or the ratio of land to water. Rockstar has not announced GTA 6’s total map size at all. The map and setting guide covers confirmed geography, while the map-size page explains why numerical estimates remain uncertain.
Surface water is not underwater content
A large visible ocean does not guarantee a detailed seabed, and boat travel does not confirm diving mechanics. Several separate questions remain open:
| Question | Current answer |
|---|---|
| Are coastal and island areas included? | Yes |
| Are boats shown? | Yes |
| Can Lucia or Jason swim underwater? | Not announced |
| Is scuba equipment available? | Not announced |
| Are underwater missions or collectibles included? | Not announced |
| What percentage of the map is water? | Unknown |
Even if swimming returns, exploration depth could range from shallow coastal areas to extensive reefs, wrecks, caves, or almost none of those features. Official footage has not settled it.
Series precedent
GTA V allowed swimming and diving, with underwater terrain, wrecks, collectibles, marine life, and submarine-related content. San Andreas also supported swimming, an important change from older entries. Vice City surrounded its city with water but did not offer the same swimming freedom. Red Dead Redemption 2 used water more restrictively, reminding us that newer technology does not force every mechanic into every game.
Leonida’s geography makes water gameplay sensible, especially around the Keys and Grassrivers. Still, GTA V’s underwater systems cannot simply be assumed to return or expand.
Our read
Ocean, wetlands, and coastal travel are visibly important, but “how much” cannot be answered without an official map or reliable measurements. Claims circulating from unofficial sources should not be used to assign percentages or boundaries. Likewise, a detailed list of reefs, wrecks, sea creatures, or diving activities would go beyond announced facts.
The best current expectation is a water-rich setting whose playable depth remains unknown. See the broader map page and Trailer 2 page for official visual context without speculative measurements.
Map images, when officially released, may still leave the underwater question unresolved. A coastline can define surface navigation while hiding whether the seabed is detailed or accessible. Strong confirmation would come from gameplay showing Lucia or Jason diving freely, using equipment, interacting with underwater objects, or traveling beneath the surface beyond a scripted moment. Until then, boats and beaches establish water access only at the level shown. This page will also avoid calculating an ocean percentage from fan map boundaries, because both the boundary and the scale would need official support first.
This page will be updated when official information lands.