© Aqualung

Explore Southwest Outer Reef

Nestled in the southwest corner of Yap, the Southwest Outer Reef offers a diving experience like no other. This part of Yap is renowned for its unique aquatic terrain, boasting an underwater playground of caverns, tunnels, swim-throughs, and overhangs. Divers can explore stunning sites such as Cherry Blossom Wall, Magic Kingdom, and the famous Yap Caverns. The dramatic landscapes of these reefs provide endless opportunities for discovery and adventure. Marine life in this region is vibrant and diverse, with encounters ranging from colorful reef fish to majestic rays gliding gracefully through the water. The reefs are teeming with life, providing ample opportunities for underwater photography and observation. Whether you prefer shore dives or boat dives, the variety of dive environments here ensures there's something for everyone. Diving in the Southwest Outer Reef is not just about the underwater topography; it's about the thrill of discovering a hidden world beneath the waves. With seasonal variations bringing different marine visitors, every dive promises something new and exciting, making it a must-visit for any passionate diver.

Dive Activity

Diving in Southwest Outer Reef

Southwest Outer Reef offers a spectacular array of dive sites, renowned for its balance of shore and liveaboard diving options. Among the top sites is the enchanting "Coral Garden," known for its vibrant corals and welcoming night dives that reveal the nocturnal behaviors of the reef's marine life. Another must-see is the "Shipwreck Alley," where divers can explore historic wrecks teeming with colorful fish and intriguing underwater ecosystems.

For those interested in shore dives, the "Lagoon Edge" provides easy access and gentle conditions, perfect for beginners and seasoned divers alike. Here, you can encounter a diverse range of species, including curious sea turtles and playful dolphins. Whether you're diving from the shore or embarking on a liveaboard adventure, Southwest Outer Reef promises unforgettable underwater experiences for every level of diver.

Dive Sites

The best Months to dive in Southwest Outer Reef

Southwest Outer Reef offers year-round diving opportunities with relatively stable conditions. Water temperatures range from 22°C–28°C/72°F–82°F throughout the year, providing comfortable diving experiences. Visibility is typically excellent, often exceeding 30 meters/98 feet, making it ideal for observing diverse marine life. The weather remains generally favorable, but divers should note that the region can experience stronger currents during the fall months, which may affect dive plans. While diving is possible all year, the late summer to early autumn period might pose challenges due to increased wind activity. Planning is essential to ensure safe and enjoyable dives, especially during these less favorable months.

Top Wildlife Sightings in Southwest Outer Reef

The Southwest Outer Reef is a vibrant marine ecosystem teeming with a diverse array of marine life. Divers can expect to encounter common reef fish such as parrotfish, angelfish, and butterflyfish year-round. These colorful species glide through the coral gardens, providing a stunning underwater spectacle.

Seasonal highlights include sightings of larger marine creatures like sharks, turtles, and rays. During the warmer months, particularly between May and September, divers have a higher chance of spotting reef sharks and graceful manta rays. Green and hawksbill turtles are also frequently seen throughout the year, with increased activity during their nesting season from June to November. The likelihood of encountering these species varies, with the outer sections of the reef being particularly fruitful for spotting larger marine life.

Wildlife Sightings are Based on User Generated Content

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 200

Moray Eel

Moray Eel

19 Sightings
J
0
F
3
M
0
A
0
M
1
J
0
J
1
A
1
S
8
O
2
N
2
D
1
Green Turtle

Green Turtle

13 Sightings
J
0
F
1
M
0
A
0
M
1
J
2
J
1
A
1
S
3
O
2
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 600

Wrasse

Wrasse

13 Sightings
J
0
F
3
M
0
A
1
M
2
J
0
J
0
A
0
S
5
O
1
N
1
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 27

Barracuda

Barracuda

10 Sightings
J
0
F
2
M
0
A
1
M
0
J
1
J
2
A
0
S
2
O
0
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 300

Octopus

Octopus

9 Sightings
J
0
F
0
M
0
A
0
M
2
J
1
J
0
A
1
S
2
O
0
N
1
D
2
Hawksbill Turtle

Hawksbill Turtle

4 Sightings
J
0
F
0
M
0
A
0
M
0
J
1
J
0
A
0
S
1
O
1
N
1
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 25

Eagle Ray

Eagle Ray

3 Sightings
J
0
F
1
M
0
A
0
M
0
J
0
J
2
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 90

Angelfish

Angelfish

32 Sightings
J
1
F
2
M
0
A
2
M
2
J
4
J
3
A
3
S
10
O
2
N
2
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 130

Butterfly Fish

Butterfly Fish

29 Sightings
J
0
F
2
M
0
A
1
M
3
J
4
J
2
A
3
S
9
O
1
N
2
D
2

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 100

Parrotfish

Parrotfish

29 Sightings
J
1
F
3
M
0
A
1
M
2
J
4
J
2
A
2
S
9
O
1
N
2
D
2
Whitetip Reef Shark

Whitetip Reef Shark

27 Sightings
J
0
F
1
M
1
A
3
M
3
J
4
J
1
A
0
S
7
O
5
N
2
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 250

Grouper/Basslets

Grouper/Basslets

22 Sightings
J
0
F
2
M
0
A
0
M
2
J
0
J
3
A
2
S
10
O
1
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 28

Clownfish

Clownfish

20 Sightings
J
0
F
1
M
0
A
1
M
1
J
3
J
0
A
1
S
9
O
1
N
2
D
1
Blacktip Reef Shark

Blacktip Reef Shark

18 Sightings
J
0
F
1
M
0
A
2
M
1
J
2
J
1
A
0
S
4
O
4
N
3
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 110

Snapper

Snapper

18 Sightings
J
1
F
1
M
0
A
1
M
2
J
3
J
0
A
1
S
7
O
0
N
2
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 85

Surgeonfish

Surgeonfish

17 Sightings
J
1
F
2
M
0
A
1
M
3
J
1
J
1
A
1
S
4
O
1
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 40

Triggerfish

Triggerfish

17 Sightings
J
0
F
1
M
0
A
1
M
2
J
3
J
0
A
1
S
6
O
0
N
2
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 150

Sweetlips and Grunts

Sweetlips and Grunts

15 Sightings
J
1
F
1
M
0
A
1
M
2
J
2
J
0
A
0
S
5
O
1
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 12

Lionfish

Lionfish

14 Sightings
J
0
F
2
M
0
A
1
M
1
J
2
J
0
A
0
S
4
O
3
N
1
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 60

Soldierfish

Soldierfish

14 Sightings
J
0
F
1
M
0
A
1
M
1
J
3
J
0
A
0
S
5
O
1
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 350

Damselfish

Damselfish

14 Sightings
J
0
F
1
M
0
A
0
M
2
J
2
J
1
A
0
S
4
O
1
N
1
D
2
Grey Reef Shark

Grey Reef Shark

14 Sightings
J
0
F
2
M
0
A
1
M
1
J
0
J
1
A
1
S
2
O
3
N
1
D
2

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 40

Jackfish

Jackfish

12 Sightings
J
0
F
0
M
0
A
0
M
2
J
1
J
1
A
0
S
6
O
0
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3

Trumpetfish

Trumpetfish

11 Sightings
J
0
F
1
M
0
A
0
M
1
J
2
J
2
A
2
S
2
O
0
N
0
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 8

Bannerfish

Bannerfish

11 Sightings
J
0
F
0
M
0
A
0
M
2
J
2
J
0
A
1
S
4
O
0
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 90

Goatfish

Goatfish

9 Sightings
J
0
F
0
M
0
A
0
M
1
J
2
J
0
A
0
S
4
O
0
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 80

Stingrays

Stingrays

8 Sightings
J
1
F
1
M
0
A
0
M
1
J
2
J
0
A
0
S
1
O
0
N
0
D
2

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 130

Pufferfish

Pufferfish

8 Sightings
J
0
F
0
M
0
A
0
M
1
J
2
J
0
A
0
S
5
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3000

Nudibranch

Nudibranch

8 Sightings
J
0
F
2
M
0
A
0
M
0
J
0
J
0
A
1
S
5
O
0
N
0
D
0
Leaf Scorpionfish

Leaf Scorpionfish

7 Sightings
J
0
F
1
M
0
A
0
M
0
J
0
J
0
A
0
S
5
O
1
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 60

Squirrelfish

Squirrelfish

6 Sightings
J
0
F
0
M
0
A
0
M
1
J
0
J
2
A
0
S
1
O
0
N
1
D
1

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3400

Shrimp

Shrimp

5 Sightings
J
0
F
0
M
1
A
0
M
1
J
1
J
0
A
0
S
2
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 25

Boxfish

Boxfish

4 Sightings
J
0
F
0
M
0
A
0
M
1
J
0
J
0
A
0
S
3
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 7000

Crab

Crab

4 Sightings
J
0
F
0
M
1
A
0
M
1
J
0
J
0
A
0
S
2
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 30

Stonefish

Stonefish

3 Sightings
J
0
F
0
M
0
A
0
M
0
J
1
J
0
A
0
S
0
O
0
N
0
D
2
Silvertip Shark

Silvertip Shark

3 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
1
A
0
S
1
O
1
N
0
D
0