章鱼在海里。

The octopus is in the sea.

Source: Tatoeba

Sentence Composition

1 章鱼 zhāngyú octopus
2 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
3 海里 hǎilǐ nautical mile