From Halopedia, the Halo wiki
A cephradon is a large manta ray-like species indigenous to Sundown, a tropical, water-rich, human colony. Cephradons used their wing-like fins to swim through the planet's warm saltwater seas. They are known to sometimes peacefully interact with navorcas, dolphin-like creatures that share their environment.
List of appearances
- Halo: New Blood (First appearance)
- ^ Halo: New Blood, page 48 (Google Play edition)