Kayaks are in GTA 6: IGN saw kayaking in the preview, the Ultimate Edition adds a Crest kayak, and an official screenshot shows a paddler on a river in Mount Kalaga.
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IGN lists kayaking among the activities seen at Rockstar North. The Ultimate Edition includes a Crest kayak among Jason’s safehouse vehicles, and Rockstar pitches it for soaking up the sun.
Official screenshots show kayaks in two places: a paddler on a river under an old iron bridge in Mount Kalaga National Park, and Jason paddling in the Keys.
Other activities are in things to do in GTA 6.
A Crest kayak from the Ultimate Edition, shown among the vehicles for the protagonists’ safehouse.
A national park against Leonida’s northern border with prime hunting, fishing and off-road trails. Its backwoods are home to hillbilly mystics and paranoid radicals.
The house where the game starts: Brian Heder lets Jason live there rent-free as long as Jason helps collect money around the area.