Abstract
In recent years, when ports, fishing harbours and coastal structures are constructed, it is desirable to consider the natural environment. There is a hope that seaweed will attach onto wave dissipating blocks or armor blocks, but conventional blocks do not have a shape condensive. In response to this, we have developed new wave dissipation blocks and armor blocks. These have shapes which accommodate ecofriendliness. Stability and hydraulic functions are equal to or greater than conventional blocks. Field observations were carried out to verify the eco-friendly functions of these blocks. In all the observations, large seaweed growths such as Ecklonia cava or Eisenia bicyclis were observed. Furthermore, the abalone or the tutban shells congregations were observed. Eco-friendliness of these newly designed blocks was verified.
