New research indicates that if an individual blow to a pile rises above a particular sound level, fish can be irreparably harmed. The finding has led scientists to recommend the first-ever sound threshold for pile driving that is based on actual fish responses instead of estimates.
The researchers have combined two state-of-the-art sonar systems on a seabed frame placed within 25-metres of an OpenHydro structure. This monitors fish and diving seabirds that pass through or feed within the location; in particular, the study is assessing how fish and seabirds interact with the installation.
