Scuba Season
Underwater reef at Nusa Lembongan
Stable

Nusa Lembongan

Indonesia · Asia Pacific

Nusa Lembongan and its sister islands Nusa Ceningan and Nusa Penida form a triangle of world-class diving just 30 minutes from Sanur. The area is famous globally for manta ray cleaning stations and seasonal oceanic mola mola (sunfish) sightings from July through October. Strong currents funneling through the channels create nutrient-rich upwellings that support extraordinary biodiversity — reef sharks, eagle rays, and dense schools of fish are routine. Drift dives here range from exhilarating to extreme, and the varied topography includes walls, pinnacles, and sloping reefs covered in hard coral.

How this reef is doing

How we measure this

Reef state

Stable

Live coral covers 48% of this reef.

Coral cover

HEALTHY RANGE48%2010now
Improving

Fish life

healthy reef of its kind
SparseRich

More fish than a healthy reef of its kind.

Rich

Heat

Not surveyed

Fishing

QuietBusy

Open to fishing, and the water is busy.

Open

Sources · MERMAID and the survey teams · Reef Life Survey · Global Fishing Watch and reef gravity

Coral cover over time

Live coral cover, by survey year

Across 14 survey years from 2010 to 2025, live coral cover here has risen from 39% to 48%. Every point is a real survey reading, never a projection.

Live coral cover, percent by year

50%0%region avg 37%20102012201520172019202120232025
14 surveys, 2010 to 2025
East Asian Seas average (GCRMN)
MERMAID and the survey teams, within 56 km

What you will see

28 species across the dive sites here

White-tip Reef Shark

White-tip Reef Shark

Seen 28 days ago

at SD Point

Vulnerable

Great Barracuda

Great Barracuda

Seen 28 days ago

at SD Point

Least concern

Reef Manta Ray

Reef Manta Ray

Seen 1 month ago

at Manta Point (Nusa Penida)

Vulnerable

Banded Sea Krait

Banded Sea Krait

Seen 1 month ago

at SD Point

Least concern

Humphead Wrasse

Humphead Wrasse

Seen 2 months ago

at Toyapakeh

Endangered

Oceanic Sunfish

Oceanic Sunfish

Seen 2 months ago

at Crystal Bay

Vulnerable

Longspine Sea Urchin

Longspine Sea Urchin

Seen 3 months ago

at Crystal Bay

Bluefin Trevally

Bluefin Trevally

Seen 4 months ago

at Manta Point (Nusa Penida)

Least concern

Napoleon Wrasse

Napoleon Wrasse

Seen 4 months ago

at Toyapakeh

Endangered

Giant Trevally

Giant Trevally

Seen 9 months ago

at Manta Point (Nusa Penida)

Least concern

Yellowfin Tuna

Yellowfin Tuna

Seen 11 months ago

at Manta Point (Nusa Penida)

Least concern

Blacktip Reef Shark

Blacktip Reef Shark

Seen Jan 2025

at Manta Point (Nusa Penida)

Vulnerable

Acropora Coral

Acropora Coral

Seen year round

at Crystal Bay

Acropora Hard Coral

Acropora Hard Coral

Seen year round

at SD Point

Big-eye Trevally

Big-eye Trevally

Seen year round

at Crystal Bay

Least concern

Bigeye Trevally

Bigeye Trevally

Seen year round

at SD Point

Least concern

Black-tip Reef Shark

Black-tip Reef Shark

Seen year round

at SD Point

Vulnerable

Fusilier (Red-toothed)

Fusilier (Red-toothed)

Seen year round

at SD Point

Least concern

Fusilier Schooling Fish

Fusilier Schooling Fish

Seen year round

at Crystal Bay

Giant Clam

Giant Clam

Seen year round

at SD Point

Hard Corals (mixed reef)

Hard Corals (mixed reef)

Seen year round

at Manta Point (Nusa Penida)

Porites Coral

Porites Coral

Seen year round

at Crystal Bay

Porites Hard Coral

Porites Hard Coral

Seen year round

at SD Point

Reef Squid

Reef Squid

Seen year round

at Manta Point (Nusa Penida)

Least concern

Sea Fan

Sea Fan

Seen year round

at Toyapakeh

Wrasse (multiple cleaning species)

Wrasse (multiple cleaning species)

Seen year round

at Manta Point (Nusa Penida)

Bumphead Parrotfish

Bumphead Parrotfish

Seasonal visitor

at Crystal Bay

Vulnerable

Oceanic Manta Ray

Oceanic Manta Ray

Seasonal visitor

at Manta Point (Nusa Penida)

Endangered

Dive sites

Gear & getting wet

  • Basic kit

    • Mask and fins
    • BCD and regulator
    • 5mm full wetsuit · cooler water
    • Dive computer