How do the bladderwracks sacks of air help to survive?

Bladderwrack, a type of seaweed, has air-filled sacs called bladders that help it float in the water. This buoyancy allows the plant to reach sunlight for photosynthesis, which is crucial for its energy production. By staying near the surface, bladderwrack can also improve its access to nutrients and avoid being buried in sediment, enhancing its chances of survival in its marine environment.