The city houses three large shipbuilding enterprises and a number of small- and medium-sized ship makers. Dalian has supported key shipbuilding companies to use new-generation information technology, such as 5G and artificial intelligence, in production.

The city has also tapped into the potential of offshore aquaculture. Changhai county in Dalian, for instance, has advanced its aquaculture industry by promoting an intelligent breeding program. Based on an underwater visual monitoring system featuring a 5G connection, fishery workers can observe the growth of aquatic products on big screens in monitoring centers or on smartphones.

Marine cultural tourism and offshore power generation are other highlights of Dalian's maritime economy. It offers travelers 10 sorts of sea-related tour options, including coastal camping with recreational vehicles and professional sea fishing.

The city built the largest offshore wind farm in northern China in 2021.

It is expected to generate 1.73 billion kilowatt-hours of electricity annually to the local grid, which can meet the demand of more than 1.44 million households.