| 1 | It is articulated to the spine. | |
| 2 | Why do hummingbirds and gorillas both have backbones? | |
| 3 | The liver is served in a soup, and the spine is deep-fried and eaten like a cracker. | |
| 4 | Strange that creatures without backbones have the hardest shells. | |
| 5 | Rows of large spines cover giant-spined sea stars off the coast of California. |