| Three keys to siphonophore families and related species are included. |
| Among the most eye-catching was the siphonophore, the world's longest animal that can extend for up to 150ft, bristling with poisonous tentacles. |
| Shoals of luminous creatures swim by, including a group of angler fish, some yeti crabs and an enormous siphonophore. |
| After all, how many parents knew what a siphonophore or a yeti crab was at age three? |
| It's a collection of polyps, or siphonophore, and rather a nasty one at that. |
| Perhaps the creature that intrigued me the most, however, was the siphonophore. |
