Verfahren und Vorrichtung zum Heben eines Objekts vom Meeresboden

The invention relates to a method for lifting an object (1) from the sea floor, comprising the steps: coupling of the object (1) to a buoyancy balloon (10), and a buoyant motion of said buoyancy balloon (10) with the object (1), the buoyancy balloon (10) being filled with a buoyancy liquid such as, for example, water, the temperature of which is higher than the temperature of the sea water surrounding said buoyancy balloon (10). The invention also relates to a balloon device (100) which is configured for lifting an object (1) from the sea floor.