Johanna Nordblad plunged 103 metres on Thursday to claim the deepest under-ice freedive in a swimsuit ever recorded, spending two minutes and 42 seconds in water temperatures of two degrees Celsius.

Finnish freediver Johanna Nordblad trains on March 16 ahead of breaking the under-ice freedive record on Thursday
Finnish freediver Johanna Nordblad trains on March 16 ahead of breaking the under-ice freedive record on Thursday AFP / Elina Manninen

Wearing a short wetsuit Nordblad, 45, achieved the record in the snowy wilderness around Hossa in northern Finland, some six years after becoming the first woman to dive more than 50 metres.

Johanna Nordblad celebrates her new record after her icy plunge in Hossa
Johanna Nordblad celebrates her new record after her icy plunge in Hossa AFP / Elina Manninen

"Because we have this corona thing, all the swimming pools are closed, I can't really train regularly, so I was much more nervous before diving (this time)," Nordblad told AFP in a phonecall.

Governing body for underwater sports CMAS recently took control of measuring under-ice records, which had up to then been run by Guinness World Records and didn't have many rules.

In the 'Guinness' era, the longest distance covered under the ice, in a swimsuit and without fins, was previously established at 102.7m by the Russian Ekaterina Nekrasova, on March 6 this year.