Want a daylong kayak adventure? Hit the emerald waters off Key Biscayne, cut through bridges and canals, and explore historical sites while spotting stingrays, tropical fish, sea turtles, and the occasional pod of dolphins or manatees, under the open canopy of stark blue and sunshine, with the downtown Miami skyline as your backdrop. Paddle the coastal edges and examine the parrotfish, crabs, and shrimp that skim the sea-grass beds swaying in the shallower parts of the water. Explore the dunes and sandbars that wedge themselves out of the azure Atlantic a few yards off the various beaches. Then hit the open waters, gliding over the crests borne from the light, brisk trade winds, and explore places such as Vizcaya and Mashta House, and gawk at the multimillion-dollar houses that line the interior parts of the bay. End the day by traversing into the deeper waters one mile south of the southern end of Key Biscayne and explore Stiltsville, the historic wooden stilt homes built in the middle of Biscayne Bay in the 1930s. You can launch off any beach on Key Biscayne, while places like Crandon Park and Sailboards Miami offer hourly rentals and even group tours.