Grand Theft Auto VI, scheduled for release on 19 November 2026 for PlayStation 5 and Xbox Series X/S, is set within the fictional US state of Leonida, a satirical reimagining of Florida (Wikipedia, 2026). The game's geography centres on the neon-soaked Vice City — modelled on Miami — and extends across the Leonida Keys (Florida Keys), the Grassrivers wetlands (the Everglades), Port Gellhorn, Ambrosia and Mount Kalaga National Park (Rockstar Games, 2026). Because the playable map is dominated by warm-water coastlines, mangrove channels, estuaries and offshore Gulf and Atlantic waters, marine mammals are expected to play a more prominent role than in any prior entry in the Grand Theft Auto series. This report synthesises confirmed promotional material, trailer analysis and reasonable inference drawn from the Florida ecosystems Rockstar Games is parodying, to provide an overview of the marine mammal fauna anticipated to appear in GTA VI.
Marine mammals are warm-blooded, air-breathing aquatic mammals that include cetaceans (whales, dolphins, porpoises), sirenians (manatees and dugongs) and pinnipeds (seals and sea lions). Of these groups, Florida's real-world waters are dominated by cetaceans — chiefly the common bottlenose dolphin (Tursiops truncatus) — and sirenians, specifically the West Indian manatee (Trichechus manatus) (GTA Wiki, 2026). The second official trailer, released on 6 May 2025, included extensive aquatic and aerial footage of Vice City's beaches, the Keys' shallow reef flats and the brackish Grassrivers, all of which constitute prime marine mammal habitat in the source region (Wikipedia, 2026).
Bottlenose dolphins are the marine mammal most strongly associated with the Vice City coastline and were briefly visible in the second trailer's offshore boating sequences (Rockstar Games, 2026). Their presence continues a tradition begun in Grand Theft Auto V (2013), where dolphins populated the Pacific waters off Los Santos and reacted dynamically to player vessels. In GTA VI, leaked development footage from the 2022 Rockstar breach showed wildlife systems considerably more sophisticated than in earlier titles, suggesting dolphins will exhibit pod behaviour, bow-riding alongside boats, breaching and feeding interactions (Wikipedia, 2026). Given Jason Duval's background as a drug-runner operating out of the Keys, and protagonist Brian Heder's boatyard, marine encounters during smuggling missions are likely to feature dolphin pods as ambient fauna.
The West Indian manatee, Florida's official state marine mammal, is virtually certain to appear in Grassrivers and the Leonida Keys. Manatees inhabit the slow-moving rivers, springs and coastal estuaries of Florida and are a defining cultural and ecological symbol of the state (GTA Wiki, 2026). The second trailer prominently showcased airboat traversal across the Grassrivers wetlands, a setting that mirrors the Everglades and Crystal River regions where manatees congregate. Rockstar's satirical engagement with Floridian iconography — including Florida Man memes and conservation politics — makes manatees a strong candidate for both ambient wildlife and incidental mission content, potentially including boat-strike hazards that parody real conservation issues (Wikipedia, 2026).
Although less common in shallow Floridian waters, larger cetaceans such as humpback whales, sperm whales and the critically endangered North Atlantic right whale do occur in the offshore Gulf Stream and Atlantic continental shelf adjacent to Florida. Grand Theft Auto V famously included a rare whale-spawn off the Los Santos coast that became a fan-favourite Easter egg. With Rockstar Games' increased commitment to ecological detail — and Vice City's deep-water boating, sport-fishing and yacht culture established in the trailers and character profiles such as Brian Heder's smuggling operation (Rockstar Games, 2026) — analogous deep-water cetacean encounters are highly plausible in GTA VI.
Pinnipeds (seals and sea lions) are not native to Florida's warm waters and are therefore unlikely to appear in a naturalistic role. Any inclusion would most plausibly be confined to satirical contexts such as a Vice City aquarium, marine park parody or zoo location.
Marine mammals serve several purposes in open-world design: ambient ecological realism, photographic and collectible side activities, exploration rewards and satirical commentary. Given that GTA VI parodies 2020s American culture, including environmental discourse and influencer behaviour (Wikipedia, 2026), marine mammals may also feature in in-game social-media systems — for instance, players photographing manatees for an Instagram-style app, or radio talk shows referencing red-tide-driven manatee mortality. The game's emphasis on Florida's water-based lifestyle, scuba diving potential in Cayo Perico-adjacent waters, and the prominence of the Leonida Keys all reinforce the expectation that marine mammal fauna will be richer and more interactive than in any prior Rockstar release.
Although Rockstar Games has not officially detailed a roster of marine mammals for Grand Theft Auto VI, the game's Florida-inspired setting, confirmed coastal and wetland geography, and the studio's track record of ecological detail in GTA V and Red Dead Redemption 2 strongly suggest that bottlenose dolphins, West Indian manatees and possibly offshore whales will populate Leonida's waters. These animals will likely contribute to both the immersive realism and the satirical cultural commentary that define the series, ensuring that marine mammals are a meaningful — if peripheral — component of the GTA VI experience.
GTA Wiki (2026) Grand Theft Auto VI. Available at: https://gta.fandom.com/wiki/Grand_Theft_Auto_VI (Accessed: 14 May 2026).
Rockstar Games (2026) Grand Theft Auto VI – Official Website. Available at: https://www.rockstargames.com/VI (Accessed: 14 May 2026).
Wikipedia (2026) Grand Theft Auto VI. Available at: https://en.wikipedia.org/wiki/Grand_Theft_Auto_VI (Accessed: 14 May 2026).