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Coastal Dynamics

Coastal Dynamics

What is a beach? A beach is a length of coastline where there is an accumulation of sediment, usually sand, but sometimes gravel or small boulders, alone or in any combination. Beaches can be sections of bays. For example, Chagville ‘Beach’ and Williams ‘Bay’ are sections of the larger Carenage Bay. For the purpose of this guide, unless otherwise stated, the terms ‘beach’ and ‘bay’ are used interchangeably. Beach Morphology There are two parts to every beach: the foreshore, which may slope gently or steeply down to the water and which is in direct contact with the sea as the tides ebb and flow, and the backshore...

White encrusting zoanthid

White encrusting zoanthid

Science name: Palythoa caribaeorum (Duchassaing and Michelotti) Colonies of brownish-white fleshy polyps with short, stout tentacles grow in thick mats along rocky shorelines. In reef flats and tide pools areas they can withstand a few hours of being exposed to air during low tide. Tentacles curl in and retract and polyps secrete mucus to prevent drying out and predation.7, 8 Colonies can be seen on reef flats and in shallow-water reef communities in both Trinidad and Tobago. Care should be taken when wading to avoid stepping on these slippery mats. You may also like [smart_post_show id="19584"] ...