One of the Florida springs with rich blue waters located in the Ocala National Forest is Alexander Springs. Here's an overview:

**Alexander Springs:**

1. **Crystal-Clear Waters:**
   - Alexander Springs is known for its crystal-clear, turquoise-blue waters. The clarity of the spring allows for excellent visibility and a stunning view of the underwater environment.

2. **First-Magnitude Spring:**
   - It is classified as a first-magnitude spring, meaning it discharges a significant amount of water. The constant flow of cool water from the spring creates a beautiful pool that is ideal for swimming and snorkeling.

3. **Natural Setting:**
   - Alexander Springs is situated within the Ocala National Forest, surrounded by a lush natural setting. The forest provides a scenic backdrop, and the spring itself is a refreshing oasis in the midst of the woods.

4. **Swimming and Snorkeling:**
   - Visitors to Alexander Springs can enjoy swimming and snorkeling in the cool waters. The spring pool has a sandy bottom, and the underwater landscape features aquatic vegetation and various fish species.

5. **Scuba Diving:**
   - While scuba diving is not allowed in the spring pool, Alexander Springs is a popular spot for scuba diving training. The nearby Alexander Springs Recreation Area has facilities for scuba diving classes and practice.

6. **Canoeing and Kayaking:**
   - The spring run offers opportunities for canoeing and kayaking. Paddlers can explore the spring run, surrounded by the scenic beauty of the forest and the clear waters of the spring.

7. **Alexander Springs Recreation Area:**
   - The Alexander Springs Recreation Area provides facilities such as a picnic area, hiking trails, and a campground. It's a great place for visitors to relax and enjoy the natural surroundings.

8. **Wildlife Viewing:**
   - The Ocala National Forest is home to diverse wildlife, and visitors to Alexander Springs may encounter various bird species, turtles, and other fauna while exploring the area.

9. **Natural Springs Loop Trail:**
   - The Natural Springs Loop Trail allows visitors to explore the natural beauty surrounding Alexander Springs on foot. The trail winds through the forest, providing glimpses of the diverse flora and fauna.

10. **Conservation and Protection:**
    - Efforts are in place to conserve and protect the natural environment of Alexander Springs. Visitors are encouraged to follow Leave No Trace principles and respect the rules in place to preserve the delicate ecosystem.

Please note that conditions and regulations can change, so it's advisable to check with local authorities or the Ocala National Forest office for the latest information before planning your visit to Alexander Springs.