5 sentences

1. 我们在海里看到了海豚。

   wǒ​men zài hǎi lǐ kàn​dào le hǎi​tún.

   We saw dolphins in the sea.

   Source: Dong Chinese Dictionary

2. 海豚属于哺乳动物。

   hǎi​tún shǔ​yú bǔ​rǔ dòng​wù.

   Dolphins are mammals.

   Source: Dong Chinese Dictionary

3. 你是海豚专家吗？

   nǐ shì hǎi​tún zhuān​jiā ma?

   Are you a dolphin expert?

   Source: OpenSubtitles

4. 这个故事里没有魔法海豚。

   zhè gè gù​shi lǐ méi​yǒu mó​fǎ hǎi​tún.

   There is no magical dolphin in this story.

   Source: OpenSubtitles

5. 这是海豚肉。

   zhè shì hǎi​tún ròu.

   This is dolphin meat.

   Source: OpenSubtitles