marine - all things found in, coming from, or relating to the sea, periphery - the outer boundary, or edge of an area or object, coastline - the boundary where land and sea meet., ocean currents - predictable and constant circular movements of seawater around the planet, trough - the lowest point of the wave, tide - the rising and falling of the sea level due to forces created by the Sun and the Moon, waves - movements of seawater caused by the wind passing over the surface of the sea, fetch - the distance over the sea that wind travels to create a wave, crest - the highest peak of a wave, swash - the forward movement of water up the shore as waves hit the coastline, backwash - the water that runs back out to sea, load - material such as pebbles carried in the seawater, constructive waves - deposit material along the coast, destructive waves - erode material along the coast., constructive waves have/are - low energy, low frequency (<9/min), short fetch, gentle, flat and low, strong swash and weak backwash, destructive waves have/are - high energy, strong, high frequency (>9/min), long fetch, tall and high, weak swash and strong backwash, Ireland's coastline measures - 3,171km, Ireland's most southerly point - Mizen Head, Ireland's most northerly point - Malin Head, the _______ lies to the East of Ireland - The Irish Sea,

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