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Damaged Coral

Corals and Coral Reefs

Sargassum Seaweed

Glossary of Terms

Bathymetric chart

A topographic map of the bed of the ocean, with depths indicated by contours (isobaths) drawn at regular intervals.

Offshore Current

Any current in the offshore zone. Also refers to any current flowing away from shore.

Runup, rundown

The upper and lower levels reached by a wave on a beach or coastal structure, relative to still-water level.

Dumping

Any deliberate disposal at sea of wastes or other matter, or any deliberate disposal of vessels or other man-made structures .

Active Beach

The portion of the littoral system that is frequently (daily or at least seasonally) subject to transport by wind, waves, and currents.

Mean High Water (MHW)

The average height of the high water over a 19-year period. For shorter periods of observations, corrections are applied to eliminate known variations and reduce the results to the equivalent of a mean 19-year value. All high water heights are included in the average where the type of tide is either semi-diurnal or mixed.

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