To reach Signal Island (Îlot Signal), a popular nature reserve and snorkeling destination in New Caledonia, you must depart from the capital city of Nouméa. The island is located about 15 kilometers (9 miles) west of the mainland and is accessible primarily via taxi boat or a private vessel. Most travelers book a return transfer from the Port Moselle or the Orphelinat Bay in Nouméa, with operators like Blue Lagoon Taxi Boat, Nautica, and Coconut Taxi Boat offering regular daily departures. The boat ride typically takes around 30 to 45 minutes across the turquoise lagoon. Because the island is a protected marine reserve with no shops, restaurants, or permanent residents, you must bring all your own supplies, including food, plenty of water, and sun protection. Most visitors spend a half-day or full-day on the island, enjoying the 1.6-kilometer walking trail around the perimeter and the world-class snorkeling where you are almost guaranteed to see green sea turtles and colorful reef fish. It is essential to book your taxi boat in advance, especially on weekends or during peak tourist seasons, to ensure a spot.