New Caledonia’s Signal Island (Ilot Signal) sits within what Conservation International lists as the world’s largest marine park.

Appropriately named the Natural Park of the Coral Sea, the marine park protects 1.3 million square kilometers (502,000 square miles) of marine ecosystem that includes the world’s second longest double barrier reef and the world’s largest marine lagoon.

Within this park and nestled a mere 20 kilometers (just under 12.5 miles and 8 nautical miles) from New Caledonia’s capital city of Noumea, Signal Island is a unique marine reserve that offers its visitors unprecedented snorkeling in close proximity to a diversity of coral and tropical fish as well as hiking among sea birds and flora that is not easily replicated anywhere else in the world.

Signal Island white sandy beaches.

There is a nearly 1-mile trail around the island (passing near a coral block tower that was used as a landmark by ships heading to Noumea in the late 1800s). It can be easily walked (or run) at an easy stroll in 30-60 minutes, depending on your fitness, desired pace and how much you stop to enjoy the scenery. Part of it even includes boardwalk built to keep you away from nesting birds. There are frequent signs in both English and French (New Caledonia is a semi-autonomous French territory, after all) that help guide the walk and describe the flora and fauna you will likely see. This can be a great break from the water or a way to stretch your legs after being on a boat.

Signal Island sign showing a map of the island and trail.

If sitting on a white sandy beach is all you feel up to, there is plenty of white sand to be had. Please do NOT forget to apply copious amounts of sunscreen!

It is the snorkeling that makes Signal Island special

But it is the snorkeling that can bring plenty of day-trippers from cruise ships docked in Noumea, cruisers on small yachts, and motorboats with family from New Caledonia out for a day. We were of that day-tripping category since in 2014 we were guests of friends on their boat, the SV Reality. Some folks also moor overnight from floating buoys located around the island.

Fish duck in and out of coral canyons at Signal Island

HITT Tip – The water temperature ranges from 72 degrees Fahrenheit (22 degrees Celsius) to 80.5 degrees F (27.5 degrees C). Thus, it feels comfortable but most will need a lightweight wetsuit. Click here to see historic and current water temperatures from World Sea Temperature. Michael snorkeled with only a 3mm thick shortie suit (short sleeves and short legs) and found himself getting a bit chilled in the water after 45 minutes. Therese needed a thicker wetsuit and lightweight neoprene gloves, but still stayed comfortable – maybe it helped that she did a few laps of the island first.

Once you slip into the water, either from the sandy beach or the transom on your boat, you will feel as if you have entered into a kaleidoscope that feels at once colorful, mystical, alien and alive with energy.

Signal Island schools of colorful fish

Coral around Signal Island is thriving, free from the bleaching and crown-of-thorns starfish infestation that is plaguing so many other coral reefs around the South Pacific. And as a result, the colorful walls, canyons, fans and brain-like protrusions are dazzling (but don’t touch!!!).

Colorful coral abounds at Signal Island.

As you glide through the water, sometimes on the surface, other times diving down through schools of fish, you will marvel, as we did, at the extraordinary number of marine species in such close proximity – groupers, clown fish, parrot fish, banded sea snakes (poisonous but you really have to work at it to get bitten), cod, feather starfish, Moorish idol (made famous in the movie Finding Nemo), leopard sharks and green turtles to name but a few.

Signal Island snorkeling is colorful.

A sea turtle swims by at Signal Island.

HITT Tip – Most organized tours and boats departing from Noumea take into account the best times to snorkel. Some of these include Aqua Nature and Dal Ocean Charter. But, if you are planning your own snorkeling adventure and have the skill to captain your own boat, be sure you arrive at high tide – the best time to enjoy the entire spectacle the coral reef and the Signal Island reserve have to offer. Click here to access a tide forecasting chart for the area.

Watching a shark swim slowly by as I snorkel.

Signal Island

https://hitraveltales.com/colorful-signal-island-snorkeling-in-new-caledonia/

Heads up! This information on Signal Island in New Caledonia was accurate when we published it on HI Travel Tales, but, as we know, traveling is all about changes (and inflation, sadly). Please be sure to confirm prices, transportation schedules, hours of operation, safety and health considerations, request for perfect weather during your entire visit, and any other important details before your adventure.