Barren Island Scuba Diving from Havelock – India’s Only Active Volcano

Location

• Site: Barren Island, ~135 km NE of Port Blair, ~140 km from Havelock
• GPS: 12.280° N, 93.860° E
• Boat time: ~3.5 hours from Havelock in calm sea
• Geology: active stratovolcano, 354 m above sea level, ~2,600 m total cone height from seafloor

Conditions

• Current: mild to moderate; can pick up sharply on the corners. This is a drift dive.
• Visibility: 25–40 m typical; higher than the inshore Andaman sites because of the deep open-water position
• Water temperature: 27–29°C on operating days
• Sea state: sheltered on the leeward side, swell on the windward; surface chop on the open-sea crossing
• Entry: negative entry from the boat at the start of the drift

When we operate

• Trips run depending on sea conditions, not a fixed calendar window - the open-sea crossing has to be calm enough to be safe
• Calm-sea days give 35–40 m visibility and the cleanest current
• Plankton-rich periods bring more pelagic activity and increase manta sightings, with slightly shorter visibility
• If the sea is rough we don't operate - safety on the open-sea crossing is the rule, not the schedule

Depth profile

What this site is good for

• Volcanic basalt substrate supports sponge and soft-coral species not seen on inshore Andaman reefs
• Pelagic-rich water - tuna, GTs, jacks, occasional manta and reef sharks come close to the wall
• Low diver pressure - fewer diver-days per year than the Havelock sites, so behaviour is less habituated
• Wall topography - depth control matters here; come prepared

Pelagics & predators

• Dogtooth tuna - cruise the wall edge in the 18–30 m zone; can be 1.5 m long
• Giant Trevally (GT) - hunt in pairs and small groups; aggressive and fast
• Bigeye and bluefin trevally - tighter schools, more colour, also active hunters
• Yellowfin tuna - occasional, usually deeper than 25 m
• Wahoo and Spanish mackerel - rare but possible passing the wall

Schools & reef fish

• Fusilier walls - dense and fast-moving, cover the reef face during current
• Snapper schools - two-spot, midnight, and red snapper aggregations
• Sweetlips - hover in groups at cleaning stations
• Bannerfish, butterflyfish, angelfish on the wall
• Triggerfish, parrotfish, surgeonfish on the shallower coral heads

Big-animal sightings (seasonal)

• Manta rays - possible during plankton-rich periods; not guaranteed but realistic
• Whitetip and blacktip reef sharks - resident; usually solo, occasionally in pairs along the wall
• Eagle rays - solo and small groups crossing the sand chutes
• Marble rays - resting on the sand at the base of the wall

Volcanic-rock specialists

• Lobsters - painted and slipper species, in the basalt crevices
• Octopus - den in the lava-rock cavities; visible to patient divers
• Frogfish - camouflaged on the basalt; the dive guide finds them
• Moray eels - giant and white-eyed species in the rock fissures
• Stonefish and scorpionfish - perfectly camouflaged on volcanic substrate; don't grab the rock without checking
• Nudibranchs - less abundant than Havelock but unusual species composition

Why the species mix differs from Havelock

• Open-water position - pelagic predators come close to the wall in a way they don't on inshore reefs
• Volcanic basalt substrate - supports a different invertebrate community than Havelock's limestone-coral substrate
• Low diver pressure - a fraction of Havelock's diver-days per year; behaviour is less habituated
• Upwelling currents - nutrient-rich deep water surfaces along the cone, feeding the food chain from plankton up

Included in the fare

• Round-trip private dive boat charter from Havelock
• 2 fun dives at Barren Island, separate sites where conditions allow
• Tanks, weights, full scuba kit (BCD, regulator, wetsuit, mask, fins)
• Certified divemaster guide on every dive
• Hot lunch and unlimited drinks (water, juice, tea) between dives
• GoPro underwater photos and videos, both dives, delivered same day
• Forest Department permit assistance (we file the paperwork)
• Free Havelock hotel pickup and drop
• Full safety equipment on board: oxygen, first aid, life rafts, marine radio, satellite phone

Eligibility

• Open Water Diver certification minimum (RAID / SSI / other recognised agencies equivalent)
• Advanced Open Water strongly recommended for the deeper drift zones
• 20+ logged dives required for the deep AOWD drift sites (30–40 m)
• If your last dive was over 12 months ago, book a refresher in Havelock first
• Dive medical declaration required from every diver before boarding
• No flying within 18 hours after the last dive of the day

Paid separately at the dock

• Forest Department permit - ₹500 per Indian national / ₹2,500 per foreign national. Cash only. We file the paperwork; you pay the fee.

Cancellation & weather policy

• 15 days or more before departure: full refund, minus a 5% payment gateway fee and GST
• 7 to 14 days before: 50% refund
• Inside 7 days, or no-show: non-refundable
• Trips between 15 December and 15 January: non-refundable
• Trip cancelled by us before departure (weather, sea state or volcanic activity): rescheduled or refunded in full
• Trip ended after we have left the jetty: free reschedule, or 50% refund if we turned back before reaching the island, 25% if we got there but could not run the activity, 10% if part of it ran
• A ₹5,000 deposit holds your slot for advance pre-booking; it is refunded on the same terms as above