When it comes to diving, few can beat the thrill of gliding in strong, powerful currents. If this sounds like your kind of adventure, then a dive in Ulong Channel is a must! Also known as Ngerumekaol Pass, the Ulong Channel is located on the western side of Ulong Island. A dive here will be a journey filled with exciting drift dives, where the current carries you along as you spot lots of amazing marine life.
Eager to start your adventure on this fantastic site? Read the rest of this guide to prepare for your ultimate dive adventure in Ulong Channel!
What Makes Ulong Channel a Popular Diving Destination?
Along with the German Channel and Blue Corner, Ulong Channel is known as one of the best dive sites in Palau (and sometimes even the world!). The channel’s popularity stems from its exciting drift dive opportunities. Here, you can ride strong ocean currents through a narrow channel that connects the lagoon and the open ocean. Along the way, you’ll pass beautiful coral walls and even fascinating marine life, from spawning groupers to reef sharks, making it a breathtaking underwater experience.
However, due to the strength of the currents, diving in Ulong Channel is recommended for advanced divers only. Many dive operators in Palau advise that divers should have an Advanced Open Water certification or equivalent, along with experience in drift diving and using a reef hook, to safely navigate the strong currents.
Marine Life in Ulong Channel
1. Grey Reef Shark
The grey reef shark is a common sight in Ulong Channel, particularly near the channel’s mouth and along its other reef walls. Known for their graceful swimming, the grey reef shark is always a magnificent spectacle to see in the ocean, particularly if you get to see them in groups. Just be sure to respect their space and follow safety guidelines to ensure the best experience.
2. Groupers
Aside from the grey reef sharks, groupers are another exciting highlight in the Ulong Channel, and it’s not just because of their impressive size and striking patterns. Groupers are typically known as solitary creatures. However, in the Ulong Channel, you get to see them gather in thousands to spawn, particularly when the moon is full from April to July. For divers, being able to witness this natural phenomenon can truly be a magnificent experience.
3. Titan Triggerfish
The titan triggerfish is the largest species of triggerfish and a common sight in Ulong Channel. These fish typically use the flat, sandy areas around the channels to nest and will defend them vigorously against intruders. Because of this, be sure to maintain a respectful distance and swim horizontally away from the nest instead of ascending. Despite their protective nature, observing how they act can provide you with a fascinating insight into the behavior of reef fish.
4. Barracuda
With their sleek, silvery bodies that reflect the sunlight, the barracudas in Ulong Channel often gather in schools. Their sleek, silvery bodies reflect the sunlight, creating a mesmerising phenomenon that often draws the attention of underwater photographers. Accustomed to divers using reef hooks, these barracuda schools will often weave curiously around divers, sometimes approaching within just a few meters.
5. Giant Clams
Be sure to pay attention to the sandy patches and coral formations during your dive, as you may find giant clams lying half-buried in these areas. They would slowly open and close their shells in response to passing shadows or sudden movements. With a size that often reaches over a meter in length, the giant clams are surely a sight to see in Ulong Channel.
Best Time to Dive in the Ulong Channel in Palau
The best time to dive in the Ulong Channel is during Palau’s dry season, from November through April. This period offers stable weather, minimal rainfall, and superb underwater visibility. However, if you want to see unique marine life encounters, like the grouper spawning, visit between April and July.
Preparing for a Diving Trip in Ulong Channel
Water Visibility
The visibility in Ulong Channel usually ranges from 15-30 meters (45-90 feet), depending on the direction and strength of the tide. It reaches its peak during incoming tides, when strong currents flush out sediment and clear the water.
Water Temperature
The water in the channel stays warm throughout the year, typically ranging between 28 and 30°C (82–86 °F).
Water Currents
The currents at Ulong Channel are strong and can be unpredictable at times. To maintain safety, divers commonly use reef hooks, anchoring them on a rocky area to stabilize their bodies. If you’re traveling with a liveaboard, it’s best to follow your dive guides closely, as they’ll provide essential instructions on how and where to safely hook in without damaging the reef or putting yourself at risk. Liveaboard dive guides are highly experienced with the site’s conditions, ensuring a safe and enjoyable dive for you and everyone onboard.
Are There Other Must-Visit Dive Sites in Palau?
Aside from Ulong Channel, Palau also has several other magnificent dive sites that are worth exploring, particularly because these sites are routinely featured on liveaboard itineraries, ensuring you won’t miss these underwater highlights during your trip.
- Blue Corner
- German Channel
- Blue Holes
- Chandelier Cave
- Peleliu Wall
- WWII Japanese Shipwrecks (Iro & Sata)
Explore Ulong Channel and Other Palau Dive Sites with Solitude World!
Experience the wonders of Ulong Channel and Palau’s top dive sites with Solitude World’s Liveaboard and Resorts!
Aboard our Solitude Gaia, you can have the best diving adventure in Palau, all under the guidance of our experienced, PADI-certified professionals who ensure every adventure is safe and smooth-sailing.
After your dives, relax in comfort in cozy, modern cabins, open social spaces, and delicious meals cooked by our onboard chef. Whether you’re a seasoned diver or looking to level up your underwater experience, Solitude Gaia offers the perfect blend of exploration and relaxation.
What are you waiting for? Book your next diving adventure with us here today!