- 海洋生物 hǎiyángshēngwù marine lifeGeneral term for any living organism in the sea, including plants and animals; marine creatures; sea life
- 海洋法 hǎiyángfǎ law of the seathe body of international law that governs the rights and duties of states in maritime environments
- 中国海洋石油总公司 zhōngguóhǎiyángshíyóuzǒnggōngsī CNOOCChina National Offshore Oil Corporation; abbreviated as [[中海油|中海油|zhong1 hai3 you2]]
- 海洋性 hǎiyángxìng maritimemaritime; oceanic; relating to or characteristic of the ocean
- 海洋学 hǎiyángxué oceanographyoceanography; oceanology; the study of the physical and chemical properties of the world's oceans, including marine life and geological structure
- 广东海洋大学 guǎngdōnghǎiyángdàxué Guangdong Ocean UniversityGuangdong Ocean University; a public university in Zhanjiang, Guangdong Province
- 海洋权 hǎiyángquán maritime rightsThe rights of a coastal country to a specific width of sea area and the resources within it; includes sovereign rights over waters and the seabed as defined by international law
- 海洋文学 hǎiyángwénxué maritime literatureLiterary works that use the sea as their primary setting, background, or theme
- 海洋气候 hǎiyángqìhòu maritime climateA climate that is influenced by the ocean, characterized by mild temperatures, high humidity, and relatively small seasonal variations in temperature.
- 海洋污染 hǎiyángwūrǎn marine pollutionmarine pollution; pollution of the ocean
- 海洋法系 hǎiyángfǎxì common law systemthe legal system developed in England and used in many English-speaking countries, based on judicial precedent rather than statutory codes
- 海洋洲 hǎiyángzhōu Oceaniaone of the world's seven continents, consisting of islands in the central and southern Pacific Ocean including Australia, New Zealand, and New Guinea
- 海洋渔业 hǎiyángyúyè marine fisheriesThe industry of catching or farming aquatic life in the ocean, including deep-sea, offshore, and coastal fishing.
- 海洋温差发电 hǎiyángwēnchāfādiàn ocean thermal energy conversionGenerating electricity by utilizing the temperature difference between shallow surface water and deep ocean water.
- 海洋生物学 hǎiyángshēngwùxué marine biologythe scientific study of organisms in the ocean
- 海洋航行 hǎiyánghángxíng ocean navigationthe act of navigating or sailing across the open sea or ocean
- 海洋雪 hǎiyángxuě marine snowContinuous shower of organic material falling from upper layers of the water column to the deep ocean
- 中国海洋局海监 zhōngguóhǎiyángjúhǎijiān China Marine Surveillancegovernment agency responsible for monitoring and protecting China's maritime interests and territorial waters
- 联合国海洋法公约 liánhéguóhǎiyángfǎgōngyuē United Nations Convention on the Law of the Sea
- 中国海洋石油 zhōngguóhǎiyángshíyóu CNOOCChina National Offshore Oil Corporation, a major state-owned national oil company
- 中国海洋石油集团有限公司 zhōngguóhǎiyángshíyóujítuányǒuxiàngōngsī CNOOC GroupChina National Offshore Oil Corporation, the major state-owned national oil company focused on offshore exploration and production
- 国家海洋局 guójiāhǎiyángjú State Oceanic AdministrationState Oceanic Administration; the PRC government agency responsible for maritime affairs and policy
- 海洋化学 hǎiyánghuàxué marine chemistryThe branch of science that studies the chemical composition of ocean water and the chemical processes that occur within the ocean; also known as thalassochemistry.
- 海洋国土 hǎiyángguótǔ maritime territoryThe sea area under a country's sovereignty and jurisdiction, including the airspace above and the seabed below; also known as [[蓝色国土|藍色國土|lan2 se4 guo2 tu3]]
- 海洋性气候 hǎiyángxìngqìhòu maritime climateA climate influenced by the ocean, characterized by mild temperatures with small seasonal and daily variations, high humidity, and abundant rainfall.
- 海洋性贫血 hǎiyángxìngpínxuè thalassemiathalassemia; a group of inherited blood disorders characterized by decreased hemoglobin production
