One of the best ways to photograph the coast (especially beaches) is to choose a high vantage point. This can give the observer a view that they might not normally see and give your photo a grand scale. This could be an elevated point on a sand dune, a rock or even your car! But remember to stay safe, especially on rocks, which can be extremely slippery when they are wet.

Source: Source: www.digital-photography-school.com