Also a fantastic series! The first book had an awful lot of new words and concepts to get on board with, but once it got going I was hooked. The Essiel were a super fascinating species, I wish we had learnt more about them but what we do know only makes the mystery grander. Ahab was also amazing. Every scene with him in had me chuckling with his complete one sighted obsession.
The dogs of war series is also good. Still sticks with me. Bees is another fascinating sentience as well.