This dive site, Mermet Springs, is a full-service freshwater training facility in Southern Illinois. It serves dive shops, instructors, students, and certified divers of all levels. As a spring-fed quarry, navigation is straightforward with clear pathways and submerged attractions, making it ideal for instruction and recreational dives.
The main attractions are the diverse aquatic life, including large schools of American Paddlefish (Spoonbill), sizable bluegill, and impressive giant catfish. Lucky divers might also encounter the rare freshwater jellyfish, adding a unique element to the underwater ecosystem.
The best time to visit Mermet Springs is typically from spring through fall, offering warmer water temperatures and pleasant diving conditions. It is perfectly suited for both scuba divers and freedivers seeking an accessible freshwater experience, offering excellent opportunities for training, skill development, and observing unique freshwater fauna.
Mermet Springs, Southern Illinois
Full-service freshwater dive and training facility with large fish.
Shore Access
6m Avg Depth
12m Max Depth
About this dive site
DivingFreedivingSnorkeling
Brought to you by Mermet Springs Inc
Plan Your Visit
beginner friendlytraining facilityfreshwaterlarge fishopen waterrecreational diving
Things to Note
Difficulty:
All levels
Catters to all experience levels, from students to certified divers.
Hazards:
cold water
Current Strength:
Mild
Nearby Dive Sites
Explore other dive sites in the area

