Vampyroteuthis infernalis, shiny-shiny

Vampyroteuthis infernalis, it translates to 'vampire squid from hell' and it's awesome for a number of reasons; firstly 

I mean look at it, it's kind of awesome, in a lovecraftian way.

But before you think I'm wasting your time there is some science here, you see 

That's right it glows in the dark (and those aren't eyes).

Ha! I fooled you, this blog is actually about bioluminescence.

When our friend Cthulhu here turns out the lights his tentacles and eye-nodes emit two chemicals; luciferin and luciferase (aptly named)

The pigment luciferin reacts with oxygen to produce light while the enzyme luciferase acts as a catalyst speeding up the reaction and producing light, it's 'cold light' as only 20% of the reaction is given off as heat energy.

[sources: wikepedia and planet earth BBC]