| 1 | Food can be scarce in the deep waters off Australia. | |
| 2 | The new approach covers all the major deep sea whales. | |
| 3 | This is why so many deep-sea fishes have such big teeth. | |
| 4 | All that gas buoys up through the sediments and into the ocean, heating up the deep waters. | |
| 5 | This means they could be vitally important, like arteries providing life to the deep ocean. |