A transport device for transporting a fluid, the transport device comprising: (a) a housing, wherein the housing has a fluid inlet (111, 113) and a fluid outlet (113, 111); (b) an actuator (130, 1330) comprising a magnetic shape-memory alloy, wherein the actuator (130, 1330) is arranged at least in sections in the housing; (c) a drive by which the actuator (130, 1330) is deformable in such a way that at least one cavity (135, 135', 1335, 1335') for the fluid is formed in the actuator (130, 1330), wherein the cavity is movable by the drive in order to transport the fluid in the cavity (135, 135', 1335, 1335') from the fluid inlet (111, 113) to the fluid outlet (113, 111); (d) wherein at least one section of the actuator (130, 1330) has a separation layer by which a direct contact between the fluid and the actuator (130, 1330) is prevented in said section of the actuator (130, 1330); (e) wherein the device comprises a sealing element and the sealing element is designed and arranged between the actuator (130, 1330) and the housing in such a way that the cavity (135, 135', 1335, 1335') is edge-sealed or end-sealed during the transport of the fluid from the fluid inlet (111, 113) to the fluid outlet (113, 111), (f) wherein the sealing element has an elastic property, and wherein the sealing element abuts against the cavity surface of the actuator (130, 1330) in a section of the cavity surface in which no cavity is formed, and the sealing element abuts against a section of the cavity surface of the actuator (130, 1330) in which the cavity (135, 135', 1335, 1335') is formed when the cavity (135, 135', 1335, 1335') is formed in the actuator (130, 1330) by the drive. (a) a housing, wherein the housing has a fluid inlet (111, 113) and a fluid outlet (113, 111); (b) an actuator (130, 1330) comprising a magnetic shape-memory alloy, wherein the actuator (130, 1330) is arranged at least in sections in the housing; (c) a drive by which the actuator (130, 1330) is deformable in such a way that at least one cavity (135, 135', 1335, 1335') for the fluid is formed in the actuator (130, 1330), wherein the cavity is movable by the drive in order to transport the fluid in the cavity (135, 135', 1335, 1335') from the fluid inlet (111, 113) to the fluid outlet (113, 111); (d) wherein at least one section of the actuator (130, 1330) has a separation layer by which a direct contact between the fluid and the actuator (130, 1330) is prevented in said section of the actuator (130, 1330); (e) wherein the device comprises a sealing element and the sealing element is designed and arranged between the actuator (130, 1330) and the housing in such a way that the cavity (135, 135', 1335, 1335') is edge-sealed or end-sealed during the transport of the fluid from the fluid inlet (111, 113) to the fluid outlet (113, 111), (f) wherein the sealing element has an elastic property, and wherein the sealing element abuts against the cavity surface of the actuator (130, 1330) in a section of the cavity surface in which no cavity is formed, and the sealing element abuts against a section of the cavity surface of the actuator (130, 1330) in which the cavity (135, 135', 1335, 1335') is formed when the cavity (135, 135', 1335, 1335') is formed in the actuator (130, 1330) by the drive.