Labor Results Provide Insights into the Life of the Sylt Whale - Dead sperm whale's final days revealed after stranding on German shore

A dead sperm whale washed up on the shores of Sylt in February 2025. The 14.3-metre-long bull was found near Hörnum, marking the latest in a series of strandings along Germany's North Sea coast. Scientists have now completed their examination of the carcass, revealing key details about its final days.

The whale's body was recovered on 17 February 2025. Experts believe it suffocated under its own weight after becoming trapped in shallow tidal waters. This was the third sperm whale carcass found on German shores in five years, following discoveries in 2021, 2022, and a well-documented adult male in St. Peter-Ording just weeks earlier, on 13 January 2025.

Laboratory tests uncovered signs of parasitic infestations in the whale's subcutaneous fat and mild intestinal worms. Despite these issues, the animal appeared otherwise healthy. Inside one of its stomachs, researchers found remnants of its last meals: fish fragments and squid beaks.

Tissue samples provided further clues about the whale's life. While the exact cause of stranding remains unclear, the findings offer a rare glimpse into the health and behaviour of these deep-diving mammals.

The examination of the Hörnum whale adds to a growing record of sperm whale strandings in the region. Its death highlights the risks these animals face in shallow coastal waters. Researchers will continue analysing the data to better understand the factors behind such incidents.