Croatia's long-distance swimmer Dina Levacic swam the 30-kilometre Tsugaru Strait between the Japanese islands of Honshu and Hokkaido on Monday, her team stated.

Levacic started this endeavour off the island of Honshu at the midnight, local time, and passed this route connecting the Sea of Japan with the Pacific Ocean in seven hours, 13 minutes and 15 seconds.

The press release issued by her team reads that she is thus the 67th person in the world to swim this strait, one of the Oceans Seven challenges.

The best Croatian long-distance swimmer has so far conquered four out of those seven challenges.

The Oceans Seven is a marathon swimming challenge consisting of seven open water channel swims. It was proposed in 2008 as the swimming equivalent of the Seven Summits mountaineering challenge. It includes the North Channel, the Cook Strait, the Molokai Channel, the English Channel, the Catalina Channel, the Tsugaru Strait and the Strait of Gibraltar.

Levacic has so far swum the Catalina Channel, the English Channel, the Molokai Channel, and the Tsugaru Strait.

After Japan, three more challenges out of the Oceans Seven remain on Levacic’s agenda: Gibraltar, the North Channel and the Cook Strait.