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Colombo and Mount Lavinia

Capital-city wreck diving, with Colombo life after the boat

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Destination Guide Sources For Colombo and Mount Lavinia

Reference links used to build and maintain this guide.

48 sources • Updated Oct 29, 2026

Written by DiveJourney. Built from public sources and local operator knowledge. Last updated Oct 29, 2026.

Island Scuba, Colombo FAQ - Operator-stated Colombo season, typical wreck depth, current and visibility, airport approach and Dehiwala/Mount Lavinia land base.
Island Scuba, Colombo dive sites - Named Colombo wrecks and reefs, depth and diver-level listings; dated August 2026.
Island Scuba, Thermopylae Sierra profile - 2026 operator profile describing 7-23 m wreck depth and shallow upper structure; operator statements not independent safety clearance.
Island Scuba, Lotus Barge profile - 2026 wreck-specific 25-28 m depth and advanced qualification.
Island Scuba, Chief Dragon profile - 2026 wreck-specific upper deck/deep bottom and advanced experience restrictions.
Island Scuba, more Colombo reefs and wrecks - Palagala shallow reef and advanced/deep wreck examples; excludes out-of-bound sites farther south.
Island Scuba, certified diver trips - Advertised Colombo day dives, season, courses and Dehiwala contact. No date-specific availability established.
PADI, Island Scuba dive center listing - Third-party directory cross-check for the operator, equipment, boat, nitrox, scuba services and address.
Sri Lanka Sub Aqua Club, shipwreck inventory - Colombo wreck inventory and distinction between commercial, prior-permission and no-commercial-access wrecks.
Serendib Scuba, day excursions - Another provider advertises Colombo City Marina day-boat operations and condition-dependent site choice.
Serendib Scuba, day excursion pricing - Operator-advertised Colombo two-dive starting price of USD 120; dates and inclusions must be confirmed.
Ceylon Nautica, scuba day trips - Provider advertises Colombo November-April day diving and USD 125 two-dive equipment-inclusive option; not evidence of a booked departure.
Ceylon Nautica, published prices - Operator-advertised diving, snorkel boat and freediving prices, country-wide listing requiring local trip verification.
Ceylon Nautica, freediving - Provider marketing for PADI freediving instruction from a multi-location Sri Lanka business with Colombo contact; exact local sea training unverified.
Freediving Sri Lanka, dedicated AIDA school - Dedicated school explicitly describes south- and east-coast programs, not a confirmed Colombo or Mount Lavinia training line.
WAUG, Mount Lavinia jet ski and snorkel tour listing - Third-party advertised accompanied surface trip to Thermopylae Sierra; listing is not verification of current operation, water safety or access.
Marine Environment Protection Authority, water-quality monitoring - Sri Lankan authority describes monitoring of selected beach bathing waters and coliforms; does not publish a current pass for a named Colombo beach here.
Sri Lanka Immigration, official ETA - Official 2026 tourist ETA requirement and free ETA nationality list.
Sri Lanka Immigration, ETA application guidance - Passport at least six months, confirmed return ticket and sufficient funds guidance.
Sri Lanka Immigration, ETA fee table - Official free-ETA scheme and fees for other nationalities, subject to updates.
Airport and Aviation Services, BIA taxis - Official staffed airport taxi counter and airport operator contact.
Airport and Aviation Services, Ratmalana access - Domestic airport ground access and bus/train/taxi options.
Airport and Aviation Services, Ratmalana history - Official RML/ VCCC codes and domestic/corporate role.
Sri Lanka Railways, line timetables - Official Coast Line train timetable portal; schedules must be checked for specific day.
Sri Lanka Tourism, climate seasons - Country climate pattern, southwest monsoon May-September and second inter-monsoon October-November.
Sri Lanka Department of Census and Statistics, climate - Governmental rainfall seasons, inter-monsoon rains and southwest impact.
Sri Lanka Tourism, Colombo port visitor guide - Official city visitor activities: Pettah, Galle Face, National Museum, Independence Square and Gangaramaya.
Sri Lanka Tourism, Mount Lavinia - Mount Lavinia beach dining and leisure, not proof of safe snorkeling.
Sri Lanka Tourism, Gangaramaya Temple - Temple setting, architecture, conduct-appropriate sightseeing and February Nawam procession context.
Sri Lanka Tourism, Galle Face Green - Official seafront sunset/walk destination.
Sri Lanka Tourism, Pettah Market - Market and shopping area in central Colombo.
Department of National Museums - Official Colombo museum scope and exhibits.
Department of National Museums, admission prices - Published foreign-visitor admission; museum may revise charges.
Colombo Municipal Council, Viharamahadevi Park - Public city park next to the National Museum.
Department of National Zoological Gardens, Dehiwala Zoo - Official urban attraction and published admission.
Sri Lanka Tourism, emergency services - Tourist police, national ambulance and emergency contacts.
UK FCDO Sri Lanka health advice - 1990 ambulance, Colombo General Hospital contact and evacuation coverage advice.
Sri Lanka Navy, hyperbaric facility news, October 2026 - Navy confirms a chamber in Trincomalee, not an established walk-in Colombo chamber or a guaranteed transfer.
Divers Alert Network, flying after diving - 12+ hour single no-stop, 18+ hour repetitive, longer after decompression.
Divers Alert Network, snorkeling injuries - Hypoxic blackout, boat collision, water movement and hyperventilation hazards.
Sri Lanka Public Utilities Commission, plug standard - Type G national standard; legacy socket transition continues.
Sri Lanka Public Utilities Commission, voltage regulation - Nominal 230V distribution basis.
Central Bank of Sri Lanka, legal tender - Sri Lankan rupee is legal tender.
DFCC Bank, ATM network information - Published bank ATM availability, foreign visitor card use and withdrawal-fee variability.
Sri Lanka tourism provincial guide, essentials - Sinhala/Tamil language, English visitor usage and local currency guidance.
Sri Lanka Tourism Development Authority: scuba-diving guidance - Published registration guidance section4.1e prohibits dives exceeding30m, DSD12m and operational oxygen/emergency requirements. Deeper operator profiles are not independent authorization.
Destination hero photo by Torbenbrinker (historical) - Mount Lavinia beach, Sri Lanka.. Photo: Torbenbrinker / Wikimedia Commons. CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0. Cropped and resized. Cropped image retains the same license.
Destination hero photo by Zoshua Colah - Sunset over the ocean with palm trees. Unsplash License (https://unsplash.com/license). Photographer: https://unsplash.com/@zoshuacolah. Cropped and resized for the cover.