As is known to us that the ocean contains plentiful ocean energy. As one of clean energy sources, the ocean thermal energy has the characteristic of stability compared with tidal and wave energy. This paper introduces the principle of Oceanic Thermal Electricity Conversion (OTEC) as well as comprehensively summaries the development bottleneck and the compensation measures.

In recent years, with the rapid development of social economy, land resources have been completely exploited, and the development of marine resources has become the focus of attention of all countries in the society. As a result, the competition for marine resources has intensified. The core of the sustainable development of the marine economy lies in the coordinated development of the marine economy and the marine environment. In short, during the growth period of the marine economy, the sustainable development of the marine environment must not be ensured at the cost of destroying the marine environment. This paper mainly focuses on the sustainable development of marine economy and marine environmental protection. Starting from the current situation of marine economic development and marine environmental protection, based on the sustainable development of marine economy and the protection of marine ecological environment, this paper deeply discusses marine environmental protection measures from the perspective of sustainable development of marine economy.

As an ecological impact construction project, the main environmental impact of ocean engineering is reflected in the construction period. Due to the defects of the existing environmental management mode, the vacuum of environmental management during the construction period of ocean engineering is caused. This article analyzes the connotation and purpose of environmental supervision, and discusses the necessity of environmental supervision during the construction period of marine engineering.

With the rapid discovery of China“s economic construction, peoples demand for resources is increasing, which makes resources increasingly exhausted. In order to meet the huge resources needed by the national and social development, rich marine resources are vigorously developed. Meanwhile, marine resources are rich in a variety of renewable resources. Through the use of natural forces and mechanical facilities, marine energy is transformed into various resources needed by people, such as tidal energy, wave energy, water temperature energy, salinity difference energy, etc. However, with the rapid development of marine economy and resource construction, people are over-exploiting and wasting marine resources seriously, which leads to increasingly severe pollution of the marine environment, serious damage to the ecological environment and deterioration of the stability of the marine ecosystem. Therefore, it is urgent to strengthen marine protection.