國立自然科學博物館

海冰（sea ice）是淡水冰晶、“鹵水”和含有鹽分的氣泡混合體，包括來自大陸的淡水冰（冰川和河冰）和由海水直接凍結而成的咸水冰，一般多指後者。廣義的海冰還包括在海洋中的河冰、冰山等。
咸水冰是固體冰和鹵水（包括一些鹽類結晶體）等組成的混合物，其鹽度比海水低2～10‰，物理性質（如密度、比熱、溶解熱，蒸發潛熱、熱傳導性及膨脹性）不同於淡水冰。

"Sea ice is a mixture of freshwater ice crystals," brine", and bubbles containing salt, including freshwater ice (glaciers and river ice) from the mainland and saltwater ice that is directly frozen from seawater. Generally it refers to the latter. In a broad sense, sea ice also includes river ice and icebergs in the ocean. Salt water ice is a mixture of solid ice and brine (including some salt crystals). Its salinity is 2-10 ‰ lower than that of seawater. Physical properties (such as density, specific heat, heat of solution, latent heat of evaporation, thermal conductivity, and expansion) are different from freshwater ice. "

2018年1月28日，拍攝於河北省秦皇島市山海關區老龍頭海冰，表現了冬季海冰之美。使用佳能5D3相機，佳能16-35鏡頭，19mm焦距，F9光圈，200感光度，曝光時間30秒。在拍攝過程中使用了減光鏡，表現了海冰動靜結合的效果。

Photographed on January 28, 2018, at Laolongtou Sea Ice of Shanhaiguan District, Qinhuangdao City, Hebei Province, it shows the beauty of sea ice in winter. Canon 5D3 camera was used, along with Canon 16-35 lens, 19mm focal length, F9 aperture, ISO 200, exposure time 30 seconds. During the shooting process, a Neutral Density lens was used to show the combination of the dynamic and static effect of sea ice.