Listen and fill in the blank with NO MORE THAN 2 WORDS.

Tour guide: Hello. Welcome to our Aquarium! Thank you for visiting us. We hope you’ll find a lot of interesting information about the sea animals after leaving here. First, we’d like to introduce you an

 in the undersea world. The dugongs you are watching are found in

. Presently, Australia hosts the largest population of dugongs in the world. You know, dugongs swim in the shallow coastal waters of northern Australia. They are sometimes called “sea cows” because they gaze on the sea grasses, Mm…

Tourist 1 (M): Sorry to interrupt you. Where about in the world can dugongs be found?

Tour guide: Well, I think… Persian Gulf, Red Sea, East Africa, and southern Asia… very small numbers in Indonesia, Malaysia, Thailand, Myanmar, the Philipines, and Viet Nam.

Tourist (F): Excuse me. How come dugongs are

?

Tour guide: …You know, in Australia dugongs are hunted by the Aborigines. Mm… sea population is also one of the major causes of their

. What’s more, dugongs are slow – moving and have little protection against

such as large sharks, saltwater crocodiles, and killer whales. All these things cause them to be in danger.

Tourists 2 (F): Oh! It’s a pity! Human need to do something to protect them.

Tour guide: Yeah. Now turn left and then you can see the sharks…