1. J.N. \"Ding\" Darling National Wildlife Refuge is located on Sanibel Island, near Fort Myers, Florida. It is named after Jay Norwood Darling, a renowned political cartoonist and conservationist. The refuge covers 6,400 acres and is recognized as one of the premier birding destinations in the United States.

The refuge is primarily composed of mangrove forests, freshwater impoundments, and submerged seagrass beds. It provides crucial habitat for diverse wildlife, including more than 230 species of birds, as well as manatees, sea turtles, alligators, and various fish and invertebrates.

Visitors can enjoy a range of activities at the refuge, such as wildlife observation, photography, hiking, biking, and kayaking. The refuge offers several trails and boardwalks for visitors to explore, including the Wildlife Drive, a four-mile scenic route that provides excellent opportunities to spot wildlife.

2. The J.N. \"Ding\" Darling National Wildlife Refuge is open seven days a week from sunrise to sunset, including holidays. The visitor center is open from 9:00 AM to 4:00 PM. You can reach the refuge at (239) 472-1100.

3. Admission to the refuge is $10 per vehicle, valid for a one-day visit. However, if you plan to visit multiple times within the next year, an annual pass is available for $25. The refuge also offers various guided tours and programs, which may have additional fees. Transportation to the refuge is typically by private vehicle, as there is no public transportation directly to the refuge. However, there are several bike rental shops and transportation services available on Sanibel Island.