A measure of the ammount of dissolved salt contained in water.
A measure of the ammount of mattre packed into a given volume.
The flat or gently sloping land that lies submerged around the edge of a continent that extends from the shoreline out to a continental slope.
A system that uses sound waves to measure distanses and locate objects.
A mass of moving water.
The movement of water from the surfase to greater depths.
The movement of water up to the surfase.
Changes in air and water movements cause a global weather event.
A current that moves water parrallel from the shore.
Narrow streams of water that break through sandbars and drain rapidly back to the sea.
A periodic rising and falling of the water level of the Ocean.
The differense in height between a high tide and the next low tide.
An extra-high tidal bulge and an extra low tidal dip.
A smaller tidal bulge and tidal dip.