The Chancellor of IPB University, Prof. Dr. Arif Satria recently had the opportunity to witness the activities at the 4.0 Crab Apartment in IPB Ancol area.The 4.0 Crab Apartment is a vertical crab aquaculture technology set, which is the 3rd evolution of the crab cultivation technique. The first evolution is using the base of enlargement in nature, then the second technique is horizontal aquaculture and the third technique is vertical aquaculture.