Enhancing biodiversity in a given area is never an exact science. Even with a well-considered plan for installing artificial reefs or shelters for marine life and shellfish, there is always a degree of uncertainty about whether species will truly make it their home.
According to Boskalis, this was the case at Hengistbury Head in the south of the United Kingdom, where 98 artificial reefs and rocks were installed as part of the construction of a long groyne.
