Correct

水体

/ shuǐtǐ / 
Strokes

Definition

body of water

Example

As a Noun

water body; body of water; waters

1
Yánhǎi
沿海
shuǐtǐ
水体

coastal waters

2
Hǎiyáng
海洋
shuǐtǐ
水体

marine waters