Here are five different ways to say 'Dolphins are smart! They can even talk with one another using clicks and whistles,' in a way that's easy for a 7-year-old to understand:
- Dolphins are very clever! They use clicks and whistles to chat with each other.
- Dolphins are really smart animals. They talk to friends by making clicking and whistling sounds.
- Did you know dolphins are smart? They speak to each other using special clicks and whistles.
- Dolphins are super smart! They use sounds like clicks and whistles to tell things to their friends.
- Dolphins can think really well and talk by clicking and whistling to one another.