#$%^&*AU2012201758A120121213.pdf#####ABSTRACT Disclosed is a concrete artificial reef for protecting and developing marine resources, which may be installed on the bottom of an ocean in the coastal areas of the sea, which comprises a main body having a triangular prism shape, in which three wall surfaces of the main body are formed concave respectively toward the center of the triangular prism, so that the main body corresponds roughly to the center portion of the triangular prism； and three walls respectively protrude from the main body in the radial direction, wherein low ends of the two walls among the three walls are laid on an ocean floor and the rest one wall is placed in an upright position toward surface of the sea, and wherein a plurality of through openings having a triangular shape, a quadrangular shape or a pentagonal shape are formed through the walls, respectively. Due to this structure, the concrete artificial reef can properly create a plane structure for building up sea jungle and a vertical structure on which a variety of shellfish and ear shell can inhabit. In detail, an obscure space between the bottom of an ocean and the reef, and a bright space to be exposed to the outside may be properly provided at only one artificial reef. Furthermore, it is possible to sufficiently provide a small and narrow crevice therein in which young of shellfishes can behind so as to keep oneself from natural enemy. Consequently, it is capable of producing an effective reef for seaweed very soon in which the concrete artificial reef is installed. It makes it possible for smooth flow and moving of the seawater and the marine algae through a bottom portion of the artificial reef. This leads to good growing conditions suitable for various aquatic plants.[1/5] [Fig 1] 1 3 4 3a 4a 4a 34 22a 4 4a 4a 3a
