Keratin (The Glittering Storm)

The Keratin are a sapient spacefaring species of belligerent slug-like creatures.

Biology
The Keratin are slimy slug-like aliens with red eyes on mobile stalks, and clawed arms. They leave trails of slime as they move. Their psychic abilities are amplified in the presence of gold.

Unlike Earth slugs, the Keratin cannot be killed by pouring salt on their skin, as their thick hides protect them, but they will die quickly if salt is injected directly into their bloodstream.

Appearances

 * The Sarah Jane Adventures audio stories, The Glittering Storm (2007)