保护海豚的英语宣传语可以包括以下几个：
1. Protecting dolphins is protecting ourselves.
2. Making dolphins safe is everyone's responsibility.
3. Dolphins make our world a better place.
4. Let's love and care for our cutedolphins under the same blue sky.
5. We can, and it is very easy! We stop buying everything made by dolphins and demand legislation to protect dolphins.
这些宣传语强调了保护海豚的重要性，并鼓励人们采取行动来维护它们的生存环境
