OptionProbability
Extinct (e.g. forerunners, ring builders, old ones)
Other
Crystalline (e.g. silicon substrate)
Tentacled (e.g. squid, jellyfish)
Buoyant (e.g. whales or gas bags)
Carcinoid (e.g. crabs)
Composite (e.g. hermit crabs, the Borg)
Humanoid (e.g. greys, Mexican fakes)
Winged (e.g. birds, pterodactyls)
30
23
13
10
8
4
2
