The 44-year-old singer says he cannot think of waddling through the waters as believes he will surely drown in them, reports DailyStar.
"I can't swim. Put me out in the ocean and I'm gone," says Gallagher.
The "Songbird" singer adds he is not averse to dipping himself in water.
"I can have a bath and that. I'm all right in a hot tub," he says.