In the first image attached, arrow 4 shows the region of the body of water located in northeastern Australia and in the second image the answer: The Coral Sea.
<u>The Coral Sea is located in the western Pacific Ocean, off the northeast coast of Australia.</u> Its name is because in its waters is the <u>Great Barrier Reef</u>, which is the largest coral reef in the world and one of the most important ecosystems in danger of extinction. In addition, in this area there is a series of uninhabited islands that are called the Coral Sea Islands.