(Topics include but are not limited to)
Track 1: Coastal
Coastal and Ocean Engineering
Beach erosion and sediment transport
Climate change and sea level rise
Development of Coastal Infrastructure
Fluid dynamics of offshore structures
Lowland development and cultivation
Marine Ecology and Environment
Ocean and offshore wind energy
Oil leakage and environmental hazards
Port engineering (dredging, seawall design, etc.)
Tsunami, waves, and tides
waste water treatment
Estuarine and coastal engineering
offshore engineering
Deep sea engineering
Port waterway
Ocean Energy Engineering
Offshore oil development technology and equipment
Fixed offshore pipeline platform
submarine pipeline 
Oil and gas gathering and transportation
Track 2: Ocean Exploration
Ocean sensing
Ocean Acoustics
acoustic signal processing
Marine Environment and Acoustic Tomography
Underwater Communication and Networks
automatic control
Current measurement technology
Marine instruments and sensors
System and Observatory
Buoy technology
laser radar
Passive observation sensor
Coastal radar
Airborne and satellite radar, as well as synthetic aperture radar
Operation observation
space system
Access to converted data
Real time data quality monitoring
Track 3: Environmental effects
Marine Geodetic Information System
Marine Surveying and Engineering
marine physical chemistry
Marine Geography and Geology
estuarine and coastal
Marine Surveying and Engineering
Marine survey and monitoring
marine engineering
Marine Ecology/Environmental Oceanography
environmental hydraulics
sustainable development
Remote Sensing and Environment
environmental efficiency 
Noise and Acoustics
Environmental remediation project
Pollution control engineering
Electromagnetic Waves and Telecommunications
Water pollution and treatment
environmental management system
control of industrial pollution
Environmental safety and health
Environmental Planning and Assessment
Environmental analysis and monitoring
Other related topics such as coastline, ocean exploration, and environmental effects can be submitted!