Yuuzhan Vong Ships

Vua'spar

Yorik Akaga

Clustership

Advanced Scout Ship

Dreadnought

Spore Ship

Slave Ship

Sh'rip Sh'pa

Suuv Ban D'krid

I'friil Ma-nat

Slayer Ship

Matalok

Yuuzhan Vong Ships

Collection of alien spaceships created for the Vong Expansion mod http://www.moddb.com/mods/yuuzhan-vong-expansion

Those ships are pretty much living asteroids, sometimes covered in rock.