The aquarium wants to recruit a commentator. The exam topic is: write a review about whales. The language should be accurate and vivid, and the explanation methods should be used properly.

Hello, everyone, I am a whale 19 meters long and weighing 50 thousand kilograms. Don't think I am too fat. In fact, I am still the best female model in the ocean! What? You said I would eat you? Alas! That's ridiculous. I am a fin whale, a whale of eat small fish and Shrimp. I eat more than 2000 kilograms of food every day. Although I eat a little more, it's much better than killer whales and toothed whales. Speaking of this, I have to mention the killer whale, which is called "the tiger in the sea" in the ocean. There are often several black whales, oh, no, dozens of them form a group, surround a fin whale weighing more than 30 tons and eat it up in a few hours. Alas! We fin whales can't be their opponents! Find the safest place to sleep every day, often with several heads together. When we sleep, we always float quietly on the sea in a circle with our heads inward and our tails outward. If we hear any noise, we will have to swim and run for our lives at once.

Also, speaking of which, you humans must apologize to us whales. Why? Because, you humans always destroy the marine environment. However, I know that now you are trying to help us choose a more beautiful and beautiful water world, and you are also protecting our country and protecting animals. Here, we whales want to say "thank you!" " But the fundamental way to protect us is to prevent sewage from flowing into the sea again, okay?