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.
Yesterday I went to the the aquarium to see my favorite animal-dolphins.According to the the narrator of the aquarium,I learnt a lot about the doiphin.It is one of the most precious animals.A dolphin's brain is almost the same size as the human head.They can live for a long time.Dolphins' babies are born in the water.They can grow up to three and a half meters long.Dolphins use sound to help them find their way,look for their food and talk with each other.They live on fish,shrimps and so on.
Dolphins are very clever.They give us a show which brings us a lot of happiness and joy.And I was thrilled because there was also an interaction between the dolphins and I.
Dolphins are our good friends.As a student,I hope more and more people should take actions to protect dolphins.
参考译文：
在广阔的海洋中生活着许多具有高智力和高体能的生物。 海豚就是那些伟大的生物之一，它们惊人的思考能力和移动速度困扰着那些研究它们行为的人。
昨天我去海洋馆观看了我最喜欢的动物一一海豚。
根据海洋馆解说员的描述，我了解到了很多关于海豚的知识。 它是最珍贵的动物之一。海豚的大脑几乎与人类大脑的大小相同。 它们寿命很长。 海豚的宝宝出生在水里，它们可以长到三米半长。海豚使用声音帮助它们找到自己的方向，寻找它们的食物，并与对方交谈。它们以鱼、虾等为主。
海豚非常聪明，它们给我们表演了一个节目，带给我们很多的欢乐。 我十分激动，因为我还和海豚互动了。
海豚是我们的好朋友。作为一个学生，我希望越来越多的人应该采取行动保护海豚。