The Nautiline are a species of crustaceans from the Imperial world of Reth.
The reefs of Reth are home to billions of Nautiline, which through convergent evolution resemble terran shrimp. There are different species of Nautiline that dominate every niche in the planet's ecosystem, but few are dangerous to man. They are a main source of food to the planet's populace and are most are delicious. However the lifeform is notorious for decaying rapidly when out of the water.
- Dark Heresy: Core Rulebook (RPG) (2008)