In the vast ocean live many creatures with great intellectual and physical capacities. Dolphin is one of those great creatures, whose capacities to think and move at an astounding rate puzzle those who study their behaviors, Dolphins possess something that makes them different from all the other sea creatures. It is not strength or speed but the size of their brains. Dolphins brain is almost the same size as that found in the human head. They live for a ling time.
Dolphins babies are born in the water. They can grow up to three and a half meters long.
Dolopins use sound to help them find their way, look for their food and talk with each other. Sound is just like their eyes and mouths.
在浩瀚的海洋中生活的许多生物具有巨大的智力和体力。海豚是那些伟大的人之一，他们的思考能力，以惊人的速度难题人研究他们的行为举动，海豚拥有一些使他们不同于其他所有的海洋生物。这不是力量和速度，但他们大脑的大小。海豚的大脑几乎是相同的大小，发现在人的头。它们的寿命很长。
海豚宝宝出世在水。它们能长到三米半长。
海豚利用声音来帮助他们找到自己的路，寻找他们的食物和交谈。音就像它们的眼睛和嘴。