Yung Island Krabi (Mosquito Island): Snorkelling Guide, Four Islands Tour & Travel Tips

• Location: Andaman Sea, near Ao Nang Beach, Krabi Province
• Distance from Ao Nang: ~7–8 km
• Main highlight: Coral reef snorkelling area
• Best time to visit: November to April
• How to visit: Four Islands boat tour from Ao Nang
• Tour duration: 4–6 hours (half-day island hopping trip)

• Coral Reef Snorkelling – The shallow waters surrounding Yung Island contain coral reefs that support a diverse range of marine life, making it a popular snorkelling stop during the Four Islands tour.
• Clear Tropical Waters – On calm days, underwater visibility can reach approximately 10–15 metres, allowing visitors to observe reef formations and fish swimming through the warm Andaman Sea.
• Quiet Natural Stop – Compared with larger islands such as Poda Island, Yung Island remains a quieter location and is often considered among the best places to visit in Krabi for peaceful island hopping experiences.
• Unique Island Landscape – The island features rocky shores and dense tropical vegetation, giving it a rugged natural appearance compared with the white sandy beaches found elsewhere in Krabi.

Krabi has a tropical climate, and sea conditions can vary depending on the season. Choosing the right time helps ensure a safer and more enjoyable snorkelling experience. 

Note: National park fees of 400 THB (~₹970) per adult and 200 THB (~₹485) per child are sometimes collected in cash, depending on the tour operator and itinerary.

1. Snorkelling Over Coral Reefs

Snorkelling is the main activity at Yung Island and one of the highlights of the Four Islands tour from Ao Nang. The shallow reef areas surrounding the island create a natural underwater habitat where visitors can observe tropical marine species in clear Andaman Sea waters.

Marine Life You May Spot:

• Parrotfish
• Butterflyfish
• Damselfish
• Sea urchins
• Sea anemones
• Sea stars
• Reef coral formations
  
   

2. Enjoy the Scenic Andaman Sea Views

Even visitors who prefer to remain on the boat can enjoy the beautiful coastal scenery around Yung Island. The surrounding limestone formations and turquoise waters create a classic Krabi island landscape that is widely admired by travellers.

What Makes the Views Special:

• Turquoise Andaman Sea waters
• Dramatic limestone island formations
• Longtail boats floating in clear water
• Wide panoramic sea views

3. Photography and Marine Observation

Yung Island is also a rewarding location for travellers interested in photography and observing marine environments. The natural scenery and calm waters provide many opportunities to capture memorable travel images.

Photography Highlights:

• Limestone cliffs and tropical island scenery
• Traditional longtail boats in the Andaman Sea
• Clear shallow waters around coral reefs
• Island views during the Four Islands boat route

• Follow instructions from your boat guide before entering the water.
• Avoid touching coral reefs to protect marine ecosystems.
• Wear a life jacket if you are not a confident swimmer.
• Stay close to your tour group while exploring the reef.
  
   

Small reef sharks, such as blacktip reef sharks, are possible in the wider Krabi reef areas, although sightings around Yung Island are uncommon. These sharks are generally shy and harmless, but visitors should stay with their group while snorkelling.

• Morning Departure from Ao Nang – Most tours begin from Ao Nang Beach around 8:30–9:00 AM. Boats travel across the Andaman Sea toward the Four Islands route.
• First Stop – Chicken Island – Visitors often stop here to photograph the famous rock formation shaped like a chicken’s head.
• Second Stop – Yung Island: Boats anchor near the coral reef area, where travellers can snorkel and observe marine life in the shallow water.
• Third Stop – Tub Island – If tides allow, visitors can walk along the sandbar connecting nearby islands.
• Final Stop – Poda Island: Many tours finish at Poda Island, where visitors relax on the beach, swim, or enjoy scenic views before returning to Ao Nang.

Nearest airport: Krabi International Airport (KBV)

Distance to Ao Nang: ~25 km

Travel time: ~35–40 minutes

1. Yung Island is also called Mosquito Island since, during the humid months, insects may appear on land.
2. There Are No Sandy Beaches. Yung Island is composed of rocky shores and wild plants.
3. Visitors usually spend 20–40 minutes here, as the island is primarily a snorkelling destination; the tour boats will anchor briefly and then proceed to the next destination.
4. No Tourist Facilities because the island does not have restaurants, stores, or accommodations. Tourists have to depend on their tour boats.
5. The main attraction of Yung Island is its coral reef, and that is what makes this untouched island interesting.
6. Bring reef-safe sunscreen to prevent the destruction of the fragile coral ecosystems surrounding Yung Island. The tropical Krabi sun is really powerful, particularly when making tours around the islands.
7. Wear water shoes as the shoreline and reef entry points may be rocky or uneven in some areas. The right shoes are used to avoid minor injuries during entry into the water.
8. When snorkelling, one should not step on coral reefs, as the coral structures are fragile and can easily be destroyed. Conservation of the reef also contributes to the conservation of the marine ecosystem for future visitors.
9. Keep an eye on your belongings, as wildlife on some islands may approach unattended items. Animals can sometimes be curious and may approach visitors and steal unattended objects.

Yung Island provides a special place where one can view the dynamic marine life of the Andaman Sea of Krabi. Small and undeveloped, its coral reefs, crystal-clear waters and peaceful environment make it an unforgettable destination that should be included in the island-hopping tours. Yung Island in Krabi is one of the best natural attractions that travellers who prefer snorkelling, stunning limestone scenery, and an escapist holiday getaway without the hustle and bustle of the overcrowded beach destinations in the popular Four Islands tour circuit. Planning your trip is easy with Pickyourtrail! Check out curated Krabi tour packages to grab the best deals and explore every hidden gem with ease.