2. Longline culture: it is convenient, and it can be cultivated in the open sea and far sea, and it is necessary to fix the rope in the depths of the seabed.
3. Columnar culture: It can be cultivated on the seabed with relatively fast flow rate, with low cost and good adhesion effect.
4. Raft culture: In a calm shallow sea, wood and bamboo are tied together and floated on the water with buoys.