A dead Greenland shark, a deep‑sea species that can live centuries, washed ashore on Finisklin beach in County Sligo on April 11.
The find matters because Greenland sharks are among the longest‑lived vertebrates on Earth and are rarely seen near shore, giving researchers a rare chance to study a creature that usually dwells thousands of meters below the surface.
Greenland sharks can live for over 500 years, making them living fossils of the Arctic and North Atlantic deep sea[5]. Their slow growth, late maturity and extreme longevity have long intrigued marine biologists seeking clues about aging and climate resilience.
The carcass was discovered by local beach‑goers and later examined by a team led by marine scientist Emma Murphy of Dublin University[1]. Murphy said the specimen was in surprisingly good condition despite exposure to air and sun, allowing tissue samples to be collected for radiocarbon dating[2]. The shark was found on Finisklin beach, a remote stretch of sand in north‑western Ireland, a location confirmed by multiple reports[2][3].
Preliminary analysis suggests the shark could be about 150 years old, based on eye‑lens protein dating techniques[3]. While Yahoo reports the shark was a 150‑year‑old specimen, MSN notes the age estimate is a range, with 150 years being the most likely figure[2][3]. The exact age will be refined as labs finish processing the samples.
The shark, an apex predator of the abyss, provides clues about deep‑sea ecosystems that are otherwise inaccessible. Scientists hope its isotopic composition will reveal historical ocean temperatures, prey availability, and the impact of long‑term climate shifts on Arctic marine life[1].
The team plans to preserve the skeleton for museum display and to share data with international researchers studying the species’ genetics and longevity. If confirmed, the specimen would rank among the oldest known sharks, underscoring the importance of protecting deep‑sea habitats that harbor such ancient lifeforms[1].
“The shark’s massive size and ancient age make it a living fossil of the deep sea.”
The unexpected beach landing of a Greenland shark gives scientists direct access to tissue and skeletal material from a species that typically lives in the deep, cold waters of the Arctic. Analyzing the shark’s age, chemistry and genetics can improve understanding of extreme longevity, past ocean conditions and how climate change may affect deep‑sea predators, informing both conservation and broader marine research.
