Abstract: An improved artificial reef module for creating a feeding and shelter habitat for fish is disclosed. The artificial reef module includes a column of vertically or horizontally arranged sheets of corrugated material. The corrugated channels of each sheet run transverse to the adjacent sheet, thereby providing a system of complex channels and passageways within the module. Additionally, the flutes of one sheet may have a different height from the flutes of an adjacent sheet, thereby adding to the complexity of the passage system.