A coastline normally runs down the length of the longest side of the mat. The sea mat is made first and then the coastline is added; the price is calculated per foot. To order a length of coastline down the longest side of a 3x5ft mat you could order up to 5ft of coastline. To order a peninsular or islands send an outline sketch or jpeg image. Contact Us
    Mats with grids can be made to extend over land or stop at the coastline, just make a note on the order or contact terrain mat.