Centuries of sea erosion has left neat trenches in the reef, and every year come April and May, the reef is covered in green algae, forming the bizarre but spectacular natural wonder that is Laomei Green Algal Reef. Each year, countless photographers are attracted here. At dawn and dusk, the sea would reflect a different color of light, giving the beautiful panorama almost a dream-like quality. 

External link: http://tour.ntpc.gov.tw/page.aspx?wtp=3&wnd=336&id=E1_382000000A_011548