Instruction: Seven Wonders of the Underwater World

Response: Here's a list of the Seven Wonders of the Underwater World:

- Palau
- Belize Barrier Reef, Belize
- Great Barrier Reef, Australia
- Deep-sea hydrothermal vents (worldwide)
- Galápagos Islands, Ecuador
- Lake Baikal, Russia
- Northern Red Sea, bordered by Saudi Arabia and Yemen on the eastern shore, and Egypt, Sudan, Eritrea, and Djibouti on the western shore.