Dilumacad Underwater Tunnel – Helicopter Island

Dilumacad Underwater Tunnel in El Nido stretches 40 meters with illuminated ceiling holes, an enthralling dive for advanced adventurers.

The Dilumacad Underwater Tunnel: One of El Nido’s Marvels!

Discovered in the early 90s by a Japanese diver, the Tunnel is located on Dilumacad Island, also known as Helicopter Island due to its chopper-like shape. Situated approximately 1.5 miles from El Nido, the island is renowned for its cave dive sites, including the famous Tunnel. The dive site is located on the North side of the island, and there are no moorings available. It’s important to note that this dive should not be attempted during strong North winds.

The Dilumacad Underwater Tunnel: What to Expect?

The Dilumacad Tunnel starts at a depth of 12 meters and stretches around 40 meters in length. The presence of ceiling holes allows light to filter in, creating a mesmerizing sight as it illuminates the school of copper sweepers residing within the tunnel. As you venture into the tunnel, you’ll notice that the entrance is wide enough for two divers to explore together.

After approximately 15-20 meters, the tunnel opens up into a vast cavern, providing a glimpse of the exit ahead. The sandy bottom houses various small fish and crabs. However, please be aware that the exit is narrower, allowing only one diver to pass through the 10-meter tunnel at a time. The tunnel will lead you to a rocky area with impressive boulder formations, extending some 20 meters from the exit. Due to its unique characteristics, this dive is suitable for advanced divers only!

dilumacad tunnel map el nido palawan divers
dilumacad tunnel map el nido palawan divers

The Dilumacad Underwater Tunnel: Diving Information

  • Depth: 5-15 meters
  • Visibility: 15-20 meters
  • Current: Possible swell when wind is from the North
  • Travel time: 15 minutes by boat
  • Best months: November to May

The Dilumacad Underwater Tunnel: Marine Life

Get ready to encounter:

Soft Coral • Electric Oyster • Ringed Pipefish • Sea Sponge • Copper Sweeper • Coral Banded Shrimp • Scorpion Fish • Lion Fish • Map Pufferfish • Moray Eel • Nudibranch

Keep an Eye Out for Eagle or Devil Rays at the exit/entrance

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