The price of holidays can fluctuate a great deal throughout the year and flexible travel dates help to save money as well as avoid peak holiday times. Things can be also cheaper if booked well in advance. Before departure, holiday makers need to update information about destination including method of payment, visa and other specific requirements. Bigger lunches and lighter evening meals are economical in that lunches are generally cheaper. Sufficient identification must be available. An email sending a copy of the passport details to the holder himself is helpful in case it is lost or stolen. Clear labels of suitcases and enclosed itinerary of the journey help to find lost luggage. It is advisable to pack medication or other essential items because these can be difficult to obtain in airports or foreign countries once the flight is delayed.

Most people are afraid of sharks, but they usually do not know much about them. For example, there are about 350 species of sharks living in all oceans around the world. All of the sharks are carnivores, but most of them don't (27) ____________ people. Some sharks are very small while some others are very big.
The biggest species of sharks may be 60 feet long and weigh 15 tons. Unlike (28) ____________ other kinds of fish, sharks do not have bone. Their bodies are made up of a kind of tough white material (called cartilage). Sharks do not have ears. (29) ____________ they can ‘hear’ sounds and movements making water vibrate. The vibrations help sharks find food. Sharks use their large eyes to find food, too. Most sharks see best in low light. They often hunt for food at dawn, in the evening or in (30) _________ middle of the light.