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. Dolphin's brain is almost the same size as that found in the human head. They live for a ling time.
的海豚生活在浩瀚的海洋中，有许多具有巨大智力和体力的生物。海豚是那些伟大的生物之一，它们以惊人的速度思考和移动的能力让那些研究它们行为的人感到困惑，海豚拥有的东西使它们不同于所有其他海洋生物。不是力量或速度而是他们大脑的大小。海豚的大脑几乎和人类的大脑一样大。它们的寿命很长。
Dolphins'babies are born in the water. They can grow up to three and a half meters long.
的海豚和婴儿是在水中出生的。它们可以长到3.5米长。
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.
的海豚用声音来帮助它们找到路，寻找食物和相互交谈。声音就像他们的眼睛和嘴巴。