**Alor hammerhead shark diving expeditions target scalloped hammerheads at one deep, current-swept site reaching around 32 metres in the Pantar Strait. These are advanced dives demanding strong fitness, October timing for the best odds, and a licensed MPA-certified guide. Sightings are possible, never guaranteed. Book early.**
Where do the hammerheads gather in Alor?
Alor’s documented scalloped-hammerhead action centres on a single deep site in the Pantar Strait, where the profile drops to roughly 32 metres and the current runs very strong. This is not a relaxed reef dive. You descend fast, equalise on the way down, and hold position in moving water while scanning the blue for schooling hammerheads.
Because the site sits inside the Alor marine protected area (MPA), every diver must attend a mandatory briefing by MPA officers, pay a marine park fee, and hold a permit before entering the water. Diver numbers per site are capped by WWF-determined carrying capacity, so hammerhead slots are genuinely limited — another reason to reserve early.
Hammerheads share these waters with other pelagics. The Pantar Strait favours wide-angle shooting: schooling fish, mola mola (best spotted around September), dolphins, pilot whales, and the occasional orca all pass through. Thresher sharks sit among the protected species here, alongside turtles, coral reefs and marine mammals.
When is the best month for Alor hammerhead diving?
October is the month to build your trip around. Alor’s best diving conditions run April to November, and October–November brings the most prevalent currents — exactly the moving water that pulls pelagic action to the deep Pantar sites. The trade-off is that stronger current demands better fitness and tighter buoyancy control.
Water temperature sits near 25°C in October–November, and thermoclines can push some sites down to 20°C or lower, so a 5mm wetsuit or thicker earns its place. Visibility is usually 25–30 metres and can open toward 40 metres in the dry season. From roughly November to March the rainy season unsettles the surface and cuts visibility, so it is not the window for a hammerhead-focused expedition.
Here is how the season stacks up for pelagic-focused divers:
| Window | Currents | Water temp | Visibility | Hammerhead focus |
|---|---|---|---|---|
| Apr–Jun | Building | 31–32°C | Good, up to ~40m | Fair |
| Jul–Sep | Moderate | 31–32°C | Variable (plankton blooms) | Fair–good |
| Oct–Nov | Most prevalent | ~25°C | 25–30m | Best odds |
| Dec–Mar | Unsettled | Warm | Reduced | Off-season |
What experience and gear do you actually need?
Alor is for experienced divers, and the deep hammerhead site raises the bar further. Representative rules across licensed Alor partners call for a minimum of PADI Open Water for fun diving, with 50–100 logged dives recommended before you feel comfortable in Alor-Pantar current. For the ~32m hammerhead dive specifically, good fitness is non-negotiable.
A few hard rules apply on every reputable Alor boat:
- All dives are no-decompression — no exceptions.
- Solo diving is not allowed.
- Typical bottom-time limit is 60 minutes, or when a diver reaches 50 bar.
- Dive guides must hold special MPA certification on top of standard agency certs.
- DAN (or equivalent) dive-accident insurance is mandatory, because the nearest hyperbaric chamber is in Bali and evacuation or chamber costs are not covered by standard medical insurance.
That last point matters. Alor is remote; treat the insurance requirement as a floor, not a formality.
What does an Alor hammerhead expedition cost?
The honest answer: there is no public, citable price list for Alor dive packages, liveaboards or the marine park fee. What follows is Currentline Alor’s own indicative commercial data, as of 2026 and subject to change — not a sourced quote. Your final rate depends on operator, boat, cabin, season and group size.
| Expedition option | Duration | Diving | Indicative from-rate (USD, 2026) |
|---|---|---|---|
| Land-based hammerhead focus (Pantar) | 5 days / 4 nights | ~10–12 dives | from $1,850 pp |
| Extended Alor-Pantar + pelagic | 7 days / 6 nights | ~16–18 dives | from $2,650 pp |
| Alor Sea liveaboard (Sep–Oct window) | 8–10 days | ~24–30 dives | from $4,200 pp |
| Private small-group charter | Custom | Custom | On request |
Marine park fee, permit, DAN insurance and Alor flights are typically additional. Liveaboard seats in the September–October Alor Sea window sell out first, so treat the pelagic season as book-early or miss-out.
How does booking an expedition work?
Currentline Alor is an independent concierge. We do not run boats; we curate and arrange your trip through licensed, established Alor operators such as Dive Alor Dive, Nautika Dive Alor and Alami Alor, then hand the diving to their certified MPA guides.
- Message the concierge with your target dates, certification level and logged-dive count.
- Get a matched plan — we pair you with the operator and boat best suited to the deep hammerhead site and your experience.
- Confirm with a deposit, and we secure your capped MPA slots plus permit paperwork.
- Pre-trip brief covers gear, insurance proof, fitness and the rapid-descent drill.
- Dive Alor — regroup near 5 metres on descent, then work the current with your guide.
Ready to chase hammerheads in the Pantar Strait?
Talk to the Bali Premium Trip concierge to lock an October slot before the season fills. We will match you to a licensed Alor operator, confirm your permit and MPA briefing, and build the dive plan around honest sighting odds — never a promised encounter.
- WhatsApp: 6281128590000
- Email: sales@balipremiumtrip.com
Arranged via vetted, licensed Alor partners. Hammerhead and pelagic encounters are possible, not predictable; conditions and figures are as of 2026 and subject to change.
Frequently Asked Questions
Are hammerhead sightings guaranteed on an Alor expedition?
No. Scalloped hammerheads are wild pelagics, and no reputable operator promises an encounter. Sightings are possible, not predictable. October’s strong currents at the deep Pantar site improve your odds, and stacking several dives across a multi-day trip raises the chance further — but the ocean decides. We frame every expedition around realistic probability.
How deep and how demanding is the Alor hammerhead dive?
The documented scalloped-hammerhead site drops to around 32 metres and carries very strong current, so it demands good fitness and solid buoyancy. You descend rapidly, equalise early, and hold position in moving water. It is not a beginner dive; operators expect real experience and comfort in current before they take you there.
How many logged dives do I need for Alor hammerhead diving?
Licensed Alor operators require a minimum of PADI Open Water for fun diving, but recommend 50–100 logged dives before you tackle Alor-Pantar’s currents comfortably. For the deep hammerhead site specifically, more experience is better. Solo diving is not allowed, all dives are no-decompression, and bottom time is capped at 60 minutes or 50 bar.
Do I need special insurance to dive Alor for hammerheads?
Yes. DAN or equivalent dive-accident insurance is mandatory, not optional. Alor is remote and the nearest hyperbaric chamber is in Bali; evacuation and chamber costs are not covered by standard medical insurance. You will also need to attend a mandatory MPA briefing, pay the marine park fee, and hold a permit before any dive.