Search gender: all male female タンカイ Japanese Boy Names Variations. 1 names found. gender: all male female Name: tankai Katakana: タンカイ 0 Kanji: 淡海 Meaning: 淡Pale. Light in color. Not particular. Light and simple. Does not contain salt. Not salty. 海Sea. Wide and large. A place where many people and things gather. A large lake or pond. A large lake or pond. A frontier. The end of the earth. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > タンカイ Japanese Boy Names Variations.