Aerial view of sandbank beach between estuary and ocean with mountains in back

klein river lagoon ocean voelklip grotto mountains aerial sandbank beach estuary south africa river mouth overberg cape whale coast hermanus overstrand clear water breach sandbar klein river estuary sand bar klein river lagoon waves breaching scenic drone outdoors western cape nature travel coastline coastal coast high angle tide sea seascape surf tranquil atlantic saltwater birdseye birds eye sand idyllic grotto beach blue sky drone view sandy