Abstract: A floatable structure has a cage with a surrounding wall and a bottom, the cage being arranged for fish farming. A surrounding skirt extends in a downward direction from the bottom, wherein at least a portion of the bottom from the skirt towards a center of the cage is tight. The portion of the bottom and the skirt forming a bottom section are arranged to be filled with a gas giving the floatable structure additional buoyancy.

Abstract: A cage is for farming fish. The cage floats in a water column and the upper portion of the cage has a surrounding floating body arranged to float in a water surface. An enclosure is located between the upper portion and the lower portion of the cage, the enclosure being closed in its lower portion and forming an inside and an outside. The cage has a liquid-tight wall which is attached to the floating body and which extends from the water surface downwards in the water column. The liquid-tight wall forms a lower edge portion. The cage is provided, in its upper portion, with at least one flow booster for creating a circular water current within the liquid-tight wall. A method for creating an upward water current of fresh water within the cage is also provided.

Abstract: A method is for assembly of a fish cage. The fish cage has a bottom unit having a buoyancy exceeding a weight of the bottom unit. The bottom unit has a body configured impermeable to water. The fish cage further has at least one wall element configured impermeable to water. The method includes providing the bottom unit on a surface of a water body. The method further includes connecting the at least one wall element to the body, thereby defining a spacing impermeably separated from the water body.

Abstract: A floatable structure has a cage with a surrounding wall and a bottom, the cage being arranged for fish farming. A surrounding skirt extends in a downward direction from the bottom, wherein at least a portion of the bottom from the skirt towards a center of the cage is tight. The portion of the bottom and the skirt forming a bottom section are arranged to be filled with a gas giving the floatable structure additional buoyancy.

Abstract: The invention relates to a new and distinct variety of Paulownia tree denominated ‘NRJNJF13.’ The invention is a rapidly-growing variety distinguished from its parent varieties in terms of flower color, time of bloom, seed pod size and shape, and rate of growth.