Welcome everyone. Thank you for coming. The Great Barrier Reef, which is around 349,000 square kilometers, is the world's largest coral reef. It really is incredible. The coral reef which has many different colors, is home to a huge amount of marine life. It is home to over 1500 species of fish which is about 10% of all fish in the world today. Isn't that incredible? The Great Barrier Reef is also home to many types of whales, dolphins and turtles. If you were lucky today, we will have the chance to see some dolphins jumping out of the water, or maybe even some whales. You have come at the right time of the year to see whales. Winter when there are fewer jellyfish in the water is the best time to get in the water and really explore the reef and marine life. Jessica will now show you the safest way to get into the water. Does anyone have any questions?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions

what is the main idea of the reading passage?