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Click on the Add Layer button to select from a long list of coastal and marine layers to view in the map. Select a layer name to see information about a layer, including metadata and downloadable GIS data if available.
Explore the other tabs for more options.
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 | Seaweed anchored to a rock exposed at low tide in a mudflat in Galway Bay | Seaweed | | There are more than 9000 species of seaweeds around the world, about 500 of which have been recorded in Irish coastal waters. Seaweeds are algae that live in the sea and are attached to a surface (e.g. a rock, the seabed). They are roughly divided in red, brown and green types, the red seaweeds being the group with a largest number of species. |
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 | Even seemingly strong sections of coastline, such as these cliffs on the Dingle Peninsula, are prone to erosion. | Coastline | | The coastline of Ireland is a complex environment where land meets sea. Its shape changes over time, influenced by currents, weather, erosion, and human impacts to name a few. |
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 | Sea dunes located 20 nautical miles off the south coast of Co. Wexford are one example of seabed features. | Bathymetry of Irish Waters: GEBCO Contours | | The bathymetry around Ireland is diverse, with smooth, shallow sea floor close to the coast, and steep slopes of the continental margin further to the south and west. |
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 | Among details displayed in the OSI / OSNI 1:50,000 Webmap Series are names of channels, such as Bull's Mouth in Blacksod Bay, Co. Mayo. | Ordnance Survey Basemaps | | Ordnance Survey of Ireland and Northern Ireland provide base information such as towns, roads, counties and rivers for the Republic and Northern Ireland. In MIDA, the 1:450,000 scale basemap changes to the more detailed 1:50,000 scale basemap as you zoom in to coastal areas. |
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Zoom to a Region
or View a Subject Theme |
Pull down the relevant menu, and then select the region or theme to view. |
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