Abstract: A live well for keeping fish and bait alive includes compartmented hull that may be attached to the gunwale of a boat through swing arms which enable the hull to be positioned in the boat or to the side of the boat where it may be either in or out of the water. The hull contains ports which enable water to flow into the hull and to circulate through its compartments, thus sustaining fish and bait in those compartments. At each port is a valve for closing the port, and this enables water to be trapped in the compartments when the hull is out of the water. The valves are controlled from the exterior of the hull. Moreover, the hull may be detached from its swing arms, so that it and the fish or bait in it may be easily carried from one place to another.