Aerial images of the Florida Keys, known for their stunning natural beauty, often showcase a breathtaking combination of vibrant blue and aqua waters along with a clear blue sky. Here's a detailed description based on these common features:

**1. Blue and Aqua Waters:**
   - The aerial view reveals expansive stretches of clear, azure blue waters surrounding the Florida Keys. These waters are often characterized by varying shades of blue, ranging from deep navy near deeper areas to turquoise and aqua closer to the shallow coastal regions.
   - Coral reefs might be visible beneath the surface, creating intricate patterns and adding to the spectrum of colors. The reefs often appear as lighter patches within the vibrant sea.

**2. Coastal Features:**
   - The shoreline of the Florida Keys is evident in the image, with a mix of sandy beaches, rocky formations, and mangrove-lined coasts contributing to the picturesque scene.
   - Small cays and islets may dot the waters, breaking up the vast expanse of blue and adding additional points of interest.

**3. Coral Reefs and Sandbars:**
   - Coral formations, particularly the extensive and famous barrier reefs surrounding the keys, might be visible as lighter patches or patterns beneath the water's surface.
   - Sandbars may emerge, creating shallow, lighter-toned areas amid the deeper blue waters.

**4. Blue Sky:**
   - The aerial perspective captures a clear and vibrant blue sky overhead, devoid of clouds or with scattered fluffy white clouds. The intensity of the blue sky complements the colors of the surrounding waters.

**5. Boat Traffic:**
   - Aerial images often capture boats and watercraft navigating the crystal-clear waters. The vessels may leave visible wakes, creating white trails against the blue backdrop.

**6. Tropical Vegetation:**
   - Lush greenery, including palm trees and other tropical vegetation, may be visible along the coast, providing a vivid contrast to the blues of the water and sky.

**7. Sun Glint and Reflections:**
   - Sun glint on the water's surface may create reflective highlights, adding a touch of sparkle to the scene.
   - The reflection of the blue sky on the calm waters enhances the overall color palette.

Overall, an aerial image of the Florida Keys with blue and aqua waters against a clear blue sky would capture the region's tropical allure and showcase the beauty of its coastal environment.