In 1833, Blosseville submitted a request to undertake an expedition exploring the Arctic, which was duly approved.
He departed as commander of Lilloise and made his way to Greenland, where he carried out mapping along the east coast.
His ship became damaged and he put into Iceland for repairs.
Once this work was completed, he departed back to Greenland.
His expedition then disappeared, its last known sighting being made on 15 August 1833.
In the following years, three expeditions were mounted to find him and the 83 other men of his command but no trace was found.
In January 1846, it was reported that the Lilloise had been wrecked on Vanikoro, in the Solomon Islands.
This report was later dismissed as having been made in error, given the last sighting of Lilloise and the supposed location of the wreck.

Blosseville is commemorated in the name of the Blosseville Coast, a portion of the southeast coastline of Greenland, from between Kangerlussuaq Fjord and Cape Brewster.
His brother, a historian, later wrote a biography of him.
In 1833, Blosseville submitted a request to undertake an expedition exploring the Arctic, which was duly approved. He departed as commander of Lilloise and made his way to Greenland, where he carried out mapping along the east coast. His ship became damaged and he put into Iceland for repairs. Once this work was completed, he departed back to Greenland. His expedition then disappeared, its last known sighting being made on 15 August 1833. In the following years, three expeditions were mounted to find him and the 83 other men of his command but no trace was found. In January 1846, it was reported that the Lilloise had been wrecked on Vanikoro, in the Solomon Islands. This report was later dismissed as having been made in error, given the last sighting of Lilloise and the supposed location of the wreck. 
Blosseville is commemorated in the name of the Blosseville Coast, a portion of the southeast coastline of Greenland, from between Kangerlussuaq Fjord and Cape Brewster. His brother, a historian, later wrote a biography of him.
Jules de Blosseville