Being a slime, it has no central nervous system or intelligence of any kind. It will simply move towards a food source instinctively.
The Navy slime is actually colorless, getting it's name from the fact that it eats semen. Much less dangerous than acidic slimes, it can still be quite a nuisance. Being slow, they stick to dark areas where their prey can accidentally walk into them, and once caught it is hard to get away.

Emerald Jewel and Joyride encounter one in some caves south of Whitherwater.