Sri Lanka is the best place to watch blue whales in the world, while Mirissa is the best place to watch blue whales in Sri Lanka. It costs only 3000-4000 rupees to go to sea once, which is 150-200 yuan. Especially whale-watching boats do not see whales and do not return. Once the boat is sailing for five or six hours, if you are lucky, you can see whales in more than one hour. Whale watching is a very exciting tourist activity. Besides occupying a good position on the boat (near the ship's side and bow), we should also make some preparations to prevent seasickness. We should eat as little as possible for breakfast and prepare some medicine for seasickness. In addition, we must prepare necessary sunscreen. After all, we should sail for half a day at sea.