coastline
US /ˈkoʊst.laɪn/
UK /ˈkoʊst.laɪn/

1.
littoral, côte
the outline of a coast, especially with regard to its shape and appearance
:
•
The rugged coastline of California is famous for its scenic beauty.
Le littoral accidenté de la Californie est célèbre pour sa beauté pittoresque.
•
We walked along the sandy coastline at sunset.
Nous avons marché le long du littoral sablonneux au coucher du soleil.