Chandeleur Sound is a large, open saltwater sound located off the coast of Louisiana, separated from the Gulf of Mexico by the 50-mile crescent-shaped chain of the Chandeleur Islands. This creates a vast, exposed body of water with significant fetch. The sound is part of the Breton National Wildlife Refuge, a federally protected bird sanctuary. For paddlers, access to the sound itself is primarily via longer waterways that empty into it, such as Bayou La Loutre, which flows through the Biloxi Marsh before reaching the sound. Public kayak launches exist along Florissant Highway in St. Bernard Parish, providing access to marsh waters that eventually connect to the sound, though a direct paddle to the open sound is a major undertaking. The sound is known for rough waters, and trips from the mainland, such as from Shell Beach, involve crossing at least 20 miles of open water. This distance and exposure mean conditions are heavily influenced by wind and weather, with easterly winds creating particularly challenging seas. The area experiences significant boat traffic from fishing and charter vessels heading to the islands, so paddlers must exercise extreme caution, especially when crossing main channels. Water temperatures can be very high in summer, reaching over 31°C (88°F), posing a risk of overheating. The surrounding Chandeleur Islands feature white sand beaches and clear, Caribbean-like water color in areas, but the islands themselves have no facilities, fuel, or shelter from storms. Dolphins are commonly observed, and the seagrass meadows around the islands are important habitat. Paddling here is a serious wilderness expedition suitable only for experienced, well-prepared kayakers with solid self-rescue skills, capable of navigating open water, strong winds, and rapidly changing conditions.