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Damaged Coral

Corals and Coral Reefs

Sargassum Seaweed

Glossary of Terms

Secchi Disk

Visibility disk (white and black, 30cm diameter) used to measure the transparency of water.

Wave Propagation

The transmission of waves through water.

Wave Height

The vertical distance between a crest and the preceding trough.

Oceanic Gyre

A very large, more or less circular, pattern of water circulation in an open ocean basin.

Polluter-pays Principle

The principle adopted by the OECD countries in 1972, requires that the polluter should bear the costs that pollution damage or pollution control impose upon society.

Overwash

Transport of the sediment landward of the active beach by coastal flooding during a tsunami, hurricane, or other event with extreme waves.

The part of the uprush that runs over the crest of a berm of a structure and does not flow directly back to the ocean or lake.

The effects of waves overtopping a coastal defence, often carrying sediment landwards which is then lost to the beach system.

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