Sea legs are the ability to maintain balance and stability on a moving vessel. Synonyms for sea legs include: nautical agility, shipshape poise, buoyant balance, vessel stability, sailor's equilibrium, fluid footing, oceanic grace, seafarer's control, aquatic steadiness, seagoing confidence. These all imply the same sense of adaptability to the changing environment of a ship at sea. A seafarer's knowledge of the sea and experience on the water is key to developing and maintaining their sea legs. It is an important skillset for anyone who works or travels on ships and boats, and the ability to maintain sea legs can prevent accidents and injuries onboard.