Night Lights is the second episode of Season Five.
- Next Episode: Leaders
- Previous Episode: Inventors
Rank[]
- Number 10. Wolf - Its eyes appear to be glowing in the dark, but doesn't generate its own light.
- Number 9. Scorpion - It glows in the dark when shined on by ultraviolet light.
- Number 8. Budgie - The feathers on its head shine in UV light thanks to fluorescent pigments.
- Number 7. Latia Limpet - It releases a mass of glowing goo when feeling threatened.
- Number 6. Cookie-Cutter Shark - Part of its body glows in the dark, helping it to fool its victims.
- Number 5. Firefly - It flashes his rear end for mating, and some females lure males in for a meal.
- Number 4. Sea Firefly - It secretes glowing chemicals in a slimy mucus package from their upper lip.
- Number 3. Flashlight Fish - It has bioluminescent bacteria that produce light for both hunting and hiding.
- Number 2. Glowworm - It lives in perpetual darkness and generates light to lure prey.
- Number 1. Deep-Sea Anglerfish - It lights up in perpetual darkness thanks to a lure at the head.