Merritts Mill Pond is a 202-acre spring-fed waterway near Marianna, Florida. Fed by Jackson Blue Spring (a first-magnitude spring) and seven smaller springs, the pond stretches approximately 4 miles in length. The crystal-clear water maintains a constant 68 degrees year-round, with water levels typically fluctuating only 6-12 inches throughout the year.

Three main access points serve paddlers: Blue Springs Recreation Area at the northern end (open Memorial Day through Labor Day), Hunter Fish Camp Landing in the center (free, year-round access), and Florida Caverns RV Resort at the southern end (fee required). Blue Springs Recreation Area offers kayak rentals during its operating season.

The pond features numerous underwater caves and springs, including Shangri-La Springs, Twin Caves, Hole in the Wall, and Gator Hole. Towering cypress trees draped with Spanish moss line the waterway, while limestone bluffs create dramatic scenery. The slow-moving, clear water makes for easy paddling suitable for all skill levels.

Wildlife viewing opportunities include various bird species (herons, cormorants, ibis, kingfishers, and occasionally bald eagles), turtles, bluegill, largemouth bass, and otters. Tall eelgrass beds provide habitat for diverse aquatic life. Despite being in Florida, alligators are rarely seen due to the cold spring water.

Notable features include Jackson Blue Spring's limestone cave system, which extends approximately 5,000 feet in length and pumps an average of 76 million gallons daily. The pond's southern end terminates at a dam that feeds Spring Creek.

Paddlers should note that the smaller springs along the pond lack shallow areas or beaches for easy entry/exit. The water remains consistently clear except during drought conditions, which can affect spring flow. Cave diving requires a separate permit obtained through Cave Adventurers.