Why are some animals nocturnal? What evolutionary adaptations do you have to make to be awake during the GRAVEYARD SHIFT with horror expert with Sabina Graves? And what lurks in the ocean… at night? Discover this and more as we answer the age-old question, why is owls? I mean, why… why is owls? 

Footnotes: 

1. The cathemeral fossa
2. Barking gecko mating call
3. Australian greater glider
4. THE TAILS
5. The tarsier
6. Incredible zooplankton
7. Spiny tiger shrimp