Word: 海域 (hǎiyù) 海域 dictionary entry hǎiyù sea area; territorial waters; maritime space Full dictionary entry for 海域 Example sentences using 海域 2 sentences, showing page 1 of 1. 各国都很重视海域的安全。 Gèguó dōu hěn zhòngshì hǎiyù de ānquán. Every country takes the security of its maritime space seriously. 这片海域有很多鱼。 Zhè piàn hǎiyù yǒu hěn duō yú. There are a lot of fish in this stretch of sea.