A device for rearing aquaculture animals at sea, the aquaculture animals being shellfish, the device comprising: - a framework; - at least one rearing enclosure internally delimiting a volume for receiving the aquaculture animals; - a float device connected to said at least one rearing enclosure; - a connection connecting said at least one rearing enclosure to the framework, permitting a rotation of said at least [one] rearing enclosure with respect to the framework about at least one substantially horizontal axis of rotation; - a limiting device limiting the travel of said at least one rearing enclosure relative to the framework along the vertical direction; each rearing enclosure having a substantially flat lower bottom; the float device following the sea level when the tide is at the level of the float device and transferring to the rearing enclosure a variation of inclination from top to bottom and from bottom to top when the sea rises and falls, so that the shellfish slide over the lower bottom; the limiting device being configured for limiting the vertical amplitude of the upward and downward movement due to the float device, and the rearing device being characterized in that the limiting device comprises at least one flexible link (87, 99, 101) connecting the framework to said at least one rearing enclosure, the at least one flexible link (87, 99, 101) being resilient, the at least one rearing enclosure having a proximal edge and a distal edge that are opposite one another, the connection connecting the proximal edge to the framework, said at least one flexible link (87, 99, 101) connecting the distal edge to the framework. - a framework; - at least one rearing enclosure internally delimiting a volume for receiving the aquaculture animals; - a float device connected to said at least one rearing enclosure; - a connection connecting said at least one rearing enclosure to the framework, permitting a rotation of said at least [one] rearing enclosure with respect to the framework about at least one substantially horizontal axis of rotation; - a limiting device limiting the travel of said at least one rearing enclosure relative to the framework along the vertical direction; each rearing enclosure having a substantially flat lower bottom; the float device following the sea level when the tide is at the level of the float device and transferring to the rearing enclosure a variation of inclination from top to bottom and from bottom to top when the sea rises and falls, so that the shellfish slide over the lower bottom; the limiting device being configured for limiting the vertical amplitude of the upward and downward movement due to the float device, and the rearing device being characterized in that the limiting device comprises at least one flexible link (87, 99, 101) connecting the framework to said at least one rearing enclosure, the at least one flexible link (87, 99, 101) being resilient, the at least one rearing enclosure having a proximal edge and a distal edge that are opposite one another, the connection connecting the proximal edge to the framework, said at least one flexible link (87, 99, 101) connecting the distal edge to the framework. each rearing enclosure having a substantially flat lower bottom; the float device following the sea level when the tide is at the level of the float device and transferring to the rearing enclosure a variation of inclination from top to bottom and from bottom to top when the sea rises and falls, so that the shellfish slide over the lower bottom; the limiting device being configured for limiting the vertical amplitude of the upward and downward movement due to the float device, and the rearing device being characterized in that the limiting device comprises at least one flexible link (87, 99, 101) connecting the framework to said at least one rearing enclosure, the at least one flexible link (87, 99, 101) being resilient, the at least one rearing enclosure having a proximal edge and a distal edge that are opposite one another, the connection connecting the proximal edge to the framework, said at least one flexible link (87, 99, 101) connecting the distal edge to the framework.