He could only land and take off between high tides.
The effect of this is that the time between high tides changes a little from day to day.
There really have not been any good scientific studies proving a correlation between tides and earthquakes.
He can survive on a beach between tides.
The difference between high and low tides is amazing.
It is the average level of a sea's surface between high and low tides.
Intertidal zones are coastal areas, the space between high and low tides.
Each bead is filled with water that prevents desiccation between tides.
The moon moves in the same direction as the Earth's rotation, slightly extending the interval between high tides to 12.4 hours.
He worked during the three or so hours between tides, and then left the cairns to be destroyed by incoming waves.