In a remarkable development that challenges previous assumptions about the species’ range, the critically endangered angel shark has been documented in Welsh waters, offering new hope for one of the ocean’s most ancient and unusual predators.
The angel shark (Squatina squatina), with its distinctive flat body reminiscent of a ray, spends much of its time camouflaged on the seafloor, lying in wait for unsuspecting prey. Once believed to be largely confined to warmer waters near the Canary Islands in modern times, a series of recent sightings by fishing boats has confirmed the species’ presence off the Welsh coast, including locations in Cardigan Bay, the Bristol Channel, and north of Holyhead.
Scientists note that the angel shark was historically common across the eastern Atlantic and Mediterranean. However, decades of pollution and commercial fishing have drastically reduced its global population to just a few thousand individuals, earning it critically endangered status. Wales, it appears, may now serve as a vital habitat for this “fearsome fish,” which belongs to an ancient evolutionary lineage that has changed remarkably little over tens of millions of years.
The discovery carries particular significance because the angel shark was once a valued catch for Welsh fishermen in the 1970s and 1980s, before protective measures were introduced. Encounters in UK waters actually date back over a century, yet the species had become so rare that its reappearance in British seas has generated considerable scientific interest.
Uncovering an Evolutionary Treasure
Joanna Barker, a marine biologist with the Zoological Society of London, has been at the forefront of efforts to understand this resurgence. Having previously studied the species in the Canary Islands, Barker returned to Britain and began investigating local sightings. She has collected historical photographs from Welsh fishermen to build a clearer picture of the shark’s past and present distribution in the region.
“If we lose the angel shark, we lose a really important lineage of evolutionary history that we can’t get from any other shark species,” Barker told the BBC.
The angel shark is a master of ambush predation. Growing up to two metres in length, it buries itself in the sand, remaining almost invisible until a small fish or crab ventures too close. It then explodes upward, trapping its prey in powerful, trap-like jaws. Despite its formidable hunting technique, the species poses no real threat to humans.
Key Questions Remain
Current evidence relies primarily on reports from fishermen, but Barker and her team are preparing for dives later this year to gather direct observations. Their research aims to answer critical questions: How many angel sharks are using Welsh waters? Are these individuals seasonal visitors migrating from warmer regions such as the Canary Islands, or have they established a resident population in British seas year-round? Identifying important habitats along the Welsh coast could prove essential for targeted conservation efforts.
The findings come at a time when scientists are observing broader shifts in marine life around the UK. While sharks remain relatively uncommon in British waters, warming oceans linked to climate change may facilitate the northward expansion of species traditionally associated with more southerly ranges.
The Zoological Society of London’s work highlights both the fragility and resilience of marine ecosystems. By shedding light on the angel shark’s unexpected return to Welsh waters, researchers hope to contribute to broader strategies that could help pull this unique species back from the brink of extinction.
The reappearance of the angel shark serves as a compelling reminder of the ocean’s capacity for surprise — and the urgent need to protect the evolutionary legacies that still linger beneath the waves. Further research and responsible marine management will be key to ensuring these ancient predators continue to find sanctuary in UK waters.