A coastal stream empties into the strait from the mainland side, notable for its peculiar behavior. The current reverses unpredictably — flowing seaward one moment, inland the next — as if the creek "blinks" and changes its mind about which direction water should flow.
Local fishermen have learned the creek's rhythms, though "rhythm" implies more regularity than exists. The reversals follow no obvious pattern tied to tides, weather, or time of day. Theories range from underground connections to other water sources, to pressure differentials in caverns below, to something magical influencing the flow.
The creek itself is unremarkable — shallow, narrow, useful for freshwater if you're passing by. But visitors find the current reversals disconcerting, especially when they happen mid-crossing and suddenly you're fighting the water instead of riding it.