Locations · Pemuteran · BioRock Reef
★ · Restoration garden · Pemuteran Bay

BioRock Reef

The world's largest coral restoration project. 70+ submerged metal frames, 3–8m deep, growing live coral via low-voltage electrical mineralisation. A working laboratory of reef regeneration.

Also known as BioRock Project · Biorock Pemuteran
Story
Difficulty★ Easy
Depth3m → 12m
TypeRestoration garden
Visibility10–20m
Water27–30°C
Best seasonYear-round
GPS 8°8'14"S · 114°38'31"E · Area Pemuteran Bay · Aliases BioRock Project · Biorock Pemuteran
The story

Where the reef is being rebuilt.

In 2000, the Pemuteran community partnered with marine biologists to launch BioRock — submerged metal cages with a low-voltage current running through them, accelerating coral growth by 3–5x. Coral fragments are tied to the frames and over months they fuse, calcify, and become full reef structure.

Today there are 70+ frames in Pemuteran Bay, all swimmable. Most are recognisable shapes: domes, hearts, gateways, even a turtle-shaped sculpture. Each one is a thriving micro-reef hosting clownfish, anemones, juvenile fish, and macro critters.

"An artificial reef that grew real. The largest project of its kind in the world."

Easy from the beach, perfect for first dives, photography, and conservation-minded divers. Money from dives goes back into BioRock maintenance.

Topography

How the dive unfolds.

Shore dive. Walk in from Pemuteran beach, swim out 50–80m to the BioRock array. 70+ frames spread across a sandy bottom at 3–8m. Easy navigation — the frames are unmistakable.

★ OPEN WATER · 0–18m ★ ★ ADVANCED · 18–30m ★ ★ ★ TECH ZONE · 30m+ SURFACE ENTRY · BOAT EXIT · BOAT 10m 20m 30m 40m 50m REEF DEEP BLUE 12m+ · sandy floor ENTRY · 3m CORAL ZONE · 10m DEEPEST · 12m DIVE PATH SAFETY STOP 5m · 3 min 8°8'14"S · 114°38'31"E · GEBCO 2020 · 16 samples

Plan a typical 50–60 min dive: shore entry, gradual swim out, weave through the frames, return along the beach. Almost no current. NDL-irrelevant — depths too shallow.

Marine life · what you might see

The ocean's not a zoo.

Sightings are pure chance — current, season, time of day, and luck. Below is what divers spot at this site, but no operator can guarantee any specific encounter on any specific dive.

Clownfish · anemonefish 100%
Juvenile fish nursery 100%
Damselfish 100%
Cleaner shrimps 90%
Moray eels 70%
Scorpionfish 75%
Frogfish 50%
Nudibranchs 85%
Mandarin fish 65%
Pipefish 60%
Seahorses 35%
Hard coral growth 100%
Soft corals 95%
Anemones 100%
Sea turtles 30%
Schooling jacks (passing) 25%

Always-presentThe BioRock frames, the coral growing on them, the dense fish community they shelter.

Sometimes-presentMandarin fish at dusk, frogfish if you know which frame, seahorses on lucky days.

Practical

What you need.

01 · Cert

Certification

No certification needed for snorkelers; Open Water for diving. Ideal for Discover Scuba and Open Water students.

02 · Entry

Entry · Distance

Shore dive from Pemuteran beach. No boat. Walk in, swim 50–80m.

03 · Flow

Currents

Almost none. Very protected bay.

04 · When

Best time of day

Anytime. Late afternoon for warm light. Dusk for mandarin fish mating display.

05 · Fees

Park fee

No park fee. Small voluntary contribution to BioRock project welcomed.

06 · Schedule

Surface intervals

Easy second-dive of the day. Often paired with Macro Jetty for muck/macro photography.

Ready?

Dive BioRock Reef
on a Pemuteran safari.

All-inclusive: flights, transfers, villa, dives, food, marine fees. Two-tank Pemuteran day with this site as part of the rotation.