Tardigrade (Star Trek: Discovery)

The tardigrade was the tentative name of a large creature discovered by the USS Glenn in 2256.

Physiology
The tradigrade shared similar traits to a micro-animals from Earth and could be considered a giant cousin version. It fed on mycelium spores, fungi that existed in and out of subspace. It possessed a symbiotic relationship with the spores, allowing it to use the mycelial network, a fungal network that permated the very fabric of space giving it access to teleport anywhere in the universe. Its other physical traits were also impressive, capable of ripping through metal and immune to phaser fire. It was also capable to survive through a vacuum and under intense stress of the teleporting could enter a state of extreme cryptobiosis to survive.

Source

 * Star Trek Discovery: "Context Is for Kings"
 * Star Trek Discovery: "The Butcher's Knife Cares Not for the Lamb's Cry"