PURPOSE: Fish reefs for sea jungle creation are provided to prevent the fish reefs from being swept even with the ocean current as an area between the fish reefs are tightly combined without an additional connecting material by forming protrusion parts and connection groove parts on the fish reefs. CONSTITUTION: Fish reefs for sea jungle creation are composed of a concrete material. The fish reefs for sea jungle creation form a plane shape composed of: one side line portion; an opposite side line portion(12) which is in parallel to the one side line portion(11), and is spaced with the one side line portion with a certain interval; a connection side line portion(13) which is formed in a straight line in a direction for facing each other from both ends of the one side line portion and the opposite side line portion; an inclination side line portion(14) which is formed to be inclined to the center from the end of the connection side line portion on both sides; and an inclination connection side line portion(15) in a straight form which connects both sides of the inclination side line portion.
