海域

hǎiyù
  1. sea area
  2. territorial waters
  3. maritime space

CEDICT

Entry Composition

1 海 hǎi
  1. ocean
  2. sea
  3. great number of people or things
  4. (dialect) numerous

classifiers: 個, 片
2 域 yù
  1. field
  2. region
  3. area
  4. domain (taxonomy)