Conditions referenceSeason, water and visibilityBest Jul–Oct · Mild current · 25–30°C (coldest Jul, warmest Apr)
- Current
- Mild
- Water temperature
- 25–30°C (coldest Jul, warmest Apr)
- Visibility
- 5–20m: Typically 5-15m; muck diving is not visibility-dependent and many critters favour murkier water.
- Experience
- Open Water is enough.
01 · Marine life
What you may see
Sightings are never guaranteed. The bars show typical likelihood by month.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
A signature Lembeh critter, found year-round over black sand; reported slightly more often in the cooler July-September months.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Bargibanti and Denise pygmy seahorses live on sea fans at sites such as Nudi Retreat and Nudi Falls year-round.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Resident year-round on the sand flats; sightings are reported to increase in the cooler July-September water, though it is found in all months.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Resident in rubble and jetty structures; best seen at dusk when they rise to mate.
02 · Dive sites
Dive sites worth knowing
A starting point, not a ranking. Conditions decide what works on the day.
Aer Prang
A classic muck dive over black sand and scattered debris, good for octopuses, seahorses, scorpionfish and crustaceans.
5–20m · Mild current
Hairball
A classic black-sand muck site named for its hairy frogfish.
5–22m · Mild current
Mawali Wreck
A WWII-era wreck lying on its side, now encrusted with soft coral and hosting macro critters: a scenery contrast to the sand flats.
12–30m · Mild current
See all 7 dive sites
03 · LogisticsGetting there and costsModerate. Fly to MDC. Typical trip $–$$.
Route overview
Moderate
Reachable but with some friction: 1 domestic flight.
Airport options
MDC
Sam Ratulangi International Airport (Manado)
Domestic flights via Jakarta (CGK), Makassar (UPG) or Singapore; resorts arrange a road transfer to the strait
Typical trip cost
$–$$
under $2,000 to $2,000–4,000
Per person, excluding international flights.
- Land-based resort packages.
- A 7-night, full-board dive package commonly runs roughly $1,500-3,000 per person depending on resort tier and dive count, excluding international and domestic flights.
- Nitrox, marine-park/harbour fees, camera-room use and airport transfers vary by resort; premium macro-focused resorts sit at the upper end.