| abstract |
The present invention is a trapezoidal concave-convex artificial reef that provides a seaweed attachment concave-convex groove in which the concave-convex groove and the “V” shaped groove are formed in the artificial reef made of a polygon having a certain three-dimensional shape, It can hide by avoiding natural enemies, and it is easy to attach many seaweeds by forming uneven grooves and "V" shaped grooves on the outer frame of artificial reefs, and provides a space for shelling and spawning of shellfish. It is possible to grow, not only feeding, but also act as a spawning ground, and openings are formed in the upper flat portion, the side portion, and the lower portion to facilitate the communication of algae and supply large amounts of oxygen and nutrients. |