| A | B |
|---|
| light zone | the sunlit waters of the ocean |
| dark zone | water where sunlight does not reach |
| How does the water change from the light zone to the dark zone? | It changes from blue to black. |
| corals | small, soft-bodied animals that live in the shallow waters of the ocean |
| coral reef | a platform or ridge of coral at or near the ocean surface |
| habitat | a place where an animal or plant naturally lives or grows |
| Which fish lives in the dark zone and has a chemical in its body that makes light? | Angler fish |
| Where do dolphins, sea turtles, and sea lions live? | in the light zone |
| How do mussels keep from drying out during low tide? | During high tide, the mussels open their shells, and water and food flow into the shell. Then the mussels pull shells closed, which keeps the water inside the shell. |
| What other organism has a outer covering that protects it from drying out? | the sea star (star fish) |
| What are coral reefs endangered by? | overfishing, poison used to capture fish, and divers |
| How are coral reefs helpful to people? | Coral reefs protect the shoreline from tropical storms and make safe harbors for ships. The fish and lobsters that thrive on the reefs provide food for people. |
| Where are coral reefs found? | They are found only in the light zone. |
| What object is harmful to the dolphins? | A plastic six-pack ring can get caught on its snout, causing the dolphin to starve. |
| What is being done to help preserve the dolphin? | People are working to stop the dumping of trash into oceans. |
| How have tuna fisherman caused harm to dolphins? | They use drift nets to catch tuna, and the dolphins get caught in them too. |
| Are tuna fisherman being asked to not use drift nets. | yes |
| How is the sea turtle threatened by predators? | The sea turtle's eggs are being eaten by people and other prey. |
| How are the sea turtles being protected? | Beaches and dunes where the sea turtle's eggs are laid are being protected. |
| How are sea lions in danger? | When oil spills occur, the sea lion becomes covered in oil and dies. |
| What is being done to protect the sea lion? | People are working to prevent oil spills, and they try to cleam up the spills quicker if they do occur. |
| How is seaweed a danger to the coral reefs? | Overfishing the reefs removes the fish that eat seaweed. Therefore, seaweed grows and smothers the coral. |
| How do divers destroy coral reefs? | They break off pieces, which causes the coral to die. |
| What is being done to protect the coral reefs from divers? | Underwater nature trails are being built. |
| Why is it important to prevent oil spills? | They injure marine organisms and are hard to clean up. |
| How do buoys protect coral reefs? | Buoys are set up near the reefs, and boats cannot go past the buoys. Or they tie their boat to the buoy so they don't need to drop heavy anchors. |
| Describe the light zone. | located right off shore, receives light from sun, filled with living things, plant-like organisms provide food for animals in ocean, forms beginning of ocean food chain, and thousand of fish, turtles, dolphins, and jellyfish live here. |
| Describe the dark zone. | deeper into the ocean, blue water turns black, sunlight can't reach, not much food because no energy from the sun, and not as much life as the light zone. |
