Wentals
The Wentals' ship remains to be seen however a large water globule ship was created for Jess Tamblyn. Held together by a "skeleton" of coral it was built by Wentals by the entranced sea creatures. In Scattered Suns it was used to destroy hydroge ships by fragmenting and slamming into them.
Read more about this topic: Ships Of The Saga Of Seven Suns