Great Astrolabe Reef

About this site

The Great Astrolabe Reef is the fourth-largest barrier reef in the world, stretching 100km along Kadavu Island. This pristine, rarely-visited reef offers spectacular hard coral formations, dramatic passages, manta ray cleaning stations, and thrilling pelagic encounters. Its remote location ensures exceptional reef health and minimal diver crowds.

Conditions

Country

Fiji

Region

Kadavu Island

Max depth

5–40 m

Visibility

20–40 m

Water temperature

22–28°C

Difficulty

Intermediate to Advanced

Best season

November to April (calmer seas); Year-round

Type

Wall

Suitable for

• Scuba

Dive types

• Wall
• Reef

Marine life

• Hammerheads
• Sharks
• Mantas
• Rays
• Turtles
• Whales
• Coral