the safety of the bridge for public use. In December 2017, a lab technician pleaded guilty and was sentenced to imprisonment for eight months, while the others await sentencing. Hong Kong's Highways Department conducted tests again after the falsified results were exposed and found all test results met safety standards. Seawall integrity In April 2018, the public and media raised questions over the integrity of the seawalls protecting the artificial islands at both ends of the undersea tunnel. In footage taken by drone users and mariners, the dolosse installed at the edges of the artificial islands appear to have dislodged. Some civil engineers suggested that there was an error in design. In dismissing the safety concerns, the HZMB Authority said the dolosse were designed to be submerged and the design was working as intended. Director of Highways Department Daniel Chung denied on 8 April 2018 that the breakwater components had been washed away by waves. Subsequent aerial footage posted online showed a section of the dolosse breakwater completely underwater. Civil engineer So Yiu-kwan told Hong Kong media on 12 April 2018 that the water level, at the time the photos were taken, was about 1.74 mPD (metres above Principal Datum), but the maximum water level could reach 2.7 mPD. He said the dolosse would offer no wave protection if entirely submerged, and further alleged that they had been installed backwards. Impact on wildlife Conservationists at WWF Hong Kong blamed the construction of the HZMB for the falling number of white dolphins in the waters near the bridge. The dolphins found near waters of Lantau were worst hit with numbers dropping by 60 percent between April 2015 and March 2016. See also List of buildings and structures in Hong Kong List of streets and roads in Hong Kong List of tunnels and bridges in Hong Kong − (short TM-CLK), tunnel from HZMB HK BCF to New Territories References External links Official website (Chinese website) Official website (Hong Kong website) Official Project website (Hong Kong Project website) Highways Department page Official website (Macau website) Official website (shuttle bus operator) Save our Shoreline Designing HK, Tung Chung Sustainable Development Three cities, one bridge, graphics package by South China Morning Post with Landsat satellite images of the bridge Bridges completed in 2018 Bridges in Hong Kong Bridges in Macau Bridges over the Pearl River (China) Bridge–tunnels in Asia Immersed tube tunnels in Asia Pearl