| Level 4 vocabulary | ||
| 海 | (n) sea/ beach/ (P) | ![]() |
| Level 3 vocabulary | ||
| 海岸 | (n) coast/ beach/ (P) | ![]() |
| Level 2 vocabulary | ||
| 海外 | (n) foreign/ abroad/ overseas/ (P) | ![]() |
| 海水浴 | (n) sea bathing/ seawater bath/ (P) | ![]() |
| 海洋 | (n) ocean/ (P) | ![]() |
| Level 1 vocabulary | ||
| 海運 | (n) maritime/ marine transportation | ![]() |
| 海峡 | (n) channel/ (P) | ![]() |
| 海抜 | (n) height above sea level/ (P) | ![]() |
| 海流 | (n) ocean current/ (P) | ![]() |
| 海路 | (n-t) sea route/ (P) | ![]() |
| 航海 | (n,vs) sail/ voyage/ (P) | ![]() |
| 領海 | (n) territorial waters/ (P) | ![]() |