09/03/2026
Timing is everything at Great Bay! With one of the largest tidal ranges in the Gulf of Maine, the difference between high and low tide here isn't subtle — it can be several feet of water rising and falling twice a day.
At low tide, wide mudflats are exposed, revealing a world of life that's invisible when the water's up: worms, snails, crabs, and shorebirds probing the mud for a meal. At high tide, that same spot is submerged, and fish move in to feed in the shallows.
Pro tip: Low tide is best for spotting shorebirds and exploring mudflats. High tide is better for kayaking close to the marsh edges.