Bio Rock

Lombok, North Lombok Regency, Pemenang, Gili Islands, Gili Trawangan, West Nusa Tenggara, Indonesiareef18 m maxbeginner

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Conditions & tides

Channel site — tidal current funnels through here and can run fast, changing quickly with the tide. It is usually strongest around mid-tide and eases near the slack windows below. Dive with a local operator who knows the timing.

Satellite view of Bio Rock

Bio RockGili Trawangan · 18 m

Good · 5/5

© Esri

conditions visualisation

Good5/5

Calm and diveable right now — best window today 8 AM–6 PM.

Wind8 kn ESE

Current~1.3 kn SSW · model

Swell

0.2 m · 7s · NE

Water

28 °C

Conditions through the day

7 AM7 PM

Calmest current near slack — 04:15 PM & 04:00 AM local

Sunrise 06:04 AM · Sunset 06:11 PM local

Show details

Tide · local

Outlook — select a day for full conditions

On-face swell 0.1 m — the component of the swell aimed at this site’s exposed face. Strong-current reef: plan a drift and enter near the slack windows above. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

Bio Rock sits off Gili Trawangan, one of the three Gili Islands off the northwest coast of Lombok in West Nusa Tenggara. The site takes its name from an artificial reef structure built using mineral accretion technology, where steel frames carry a low electrical current to encourage coral growth. These installations are typically found in shallow water close to shore, making them accessible dive and snorkel sites in the strait between Trawangan and the Lombok mainland.

AI overview

Marine life here

Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.

PipefishPipefishConfirmed present · 2 independent sources
LionfishLionfishReported here · unconfirmed
PufferfishPufferfishReported here · unconfirmed
Ornate ghost pipefishOrnate ghost pipefishReported here · unconfirmed
Sea turtleSea turtleConfirmed present · 2 independent sources
NudibranchNudibranchReported here · unconfirmed
CuttlefishCuttlefishReported here · unconfirmed
Reef sharkReef sharkReported here · unconfirmed
CrocodilefishCrocodilefishReported here · unconfirmed
Moray eelMoray eelReported here · unconfirmed
TriggerfishTriggerfishReported here · unconfirmed
BarracudaBarracudaReported here · unconfirmed
GrouperGrouperReported here · unconfirmed
TrevallyTrevallyReported here · unconfirmed
Moorish IdolZanclus cornutusReported here · unconfirmed
Indo-Pacific Sergeant MajorAbudefduf vaigiensisReported here · unconfirmed
Blackpatch TriggerfishRhinecanthus verrucosusReported here · unconfirmed
Blackspotted PufferArothron nigropunctatusReported here · unconfirmed
Blacklip ButterflyfishChaetodon kleiniiReported here · unconfirmed
Green Sea TurtleChelonia mydasReported here · unconfirmed
Peacock Mantis ShrimpOdontodactylus scyllarusReported here · unconfirmed
Brown TangZebrasoma scopasReported here · unconfirmed
Whitetip Reef SharkTriaenodon obesusReported here · unconfirmed
Pacific TrumpetfishAulostomus chinensisReported here · unconfirmed
BatfishBatfishConfirmed present · 2 independent sources
SweetlipsSweetlipsReported here · unconfirmed
FrogfishFrogfishReported here · unconfirmed
SquidSquidReported here · unconfirmed
BannerfishBannerfishReported here · unconfirmed
Leopard / zebra sharkLeopard / zebra sharkReported here · unconfirmed
Garden eelGarden eelReported here · unconfirmed

Diver notes

Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.

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