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Krzysztof Starnawski (born 1968) is a Polishtechnical andcave diver andInternational Association of Nitrox and Technical Divers (IANTD),Confédération Mondiale des Activités Subaquatiques (CMAS),French Federation of Speleology (FFS) diving instructor.^[1]

All achieved with "Dual HammerHead"rebreathers of his own design.^[2]

• Open water

303 m (994 ft) on 10 September 2018 inLake Garda,Italy.^[3]

283 m (928 ft) on 3 December 2011 inDahab,Egypt (dive time 9 hours).^[4]

• Karst springs

279 m (915 ft) on 23 July 2016 in Lake Viroit (40°5′52.69″N20°7′11.17″E / 40.0979694°N 20.1197694°E /40.0979694; 20.1197694 (Lake Viroit)),Albania.^[5][6]

265 m (869 ft) on 21 August 2015 inHranice Abyss,Czech Republic.^[7][8]

• Deep diving
• Cave diving
• Technical diving

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