Swell surges gently against dolosse of Hermanus pier

swell surges dolosse hermanus pier aerial topdown artificial reef breakwater new harbour coastal engineering harbor protected atlantic coastal management reinforced concrete jutting out foamy overberg harbour foam revetment dolos south africa revetments protection ocean sea overstrand walker bay western cape patterns quay destination seascape nautical maritime seaside coast froth diagonal wave action new harbor reinforced protect aerial drone overhead topdown copy space