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Sharks May Return to UK Waters as Seas Warm
30 Apr
Summary
- North Sea temperatures hit record highs, attracting marine life.
- Fossil evidence suggests ancient sharks preyed on whales.
- Warming seas could draw great white sharks back to UK.
- New study analyzes whale fossils and shark teeth.
- Extinct mako shark relative may have lived in ancient North Sea.
Last year, the North Sea experienced record surface water temperatures, reaching an average of 11.6C, the highest since records began in 1969. These warming conditions are increasingly attracting marine mammals such as seals and dolphins to the area.
Scientists are now investigating the potential implications of these environmental shifts for marine predators. A study of whale fossils, unearthed from North Sea sediments dating back approximately five million years, has provided intriguing evidence. These ancient waters were warmer and supported a variety of whales and sharks.
Analysis of fossilized tooth fragments found in whale skulls indicates that sharks actively preyed on these large marine animals. The identified teeth belonged to a bluntnose sixgill shark and an extinct mako shark, a relative of the modern great white shark.
This fossil record offers insight into potential future ecosystem changes driven by climate breakdown and ocean warming. Researchers suggest that the growing presence of seals and dolphins in UK seas could, in turn, attract larger predators, including great white sharks, back to these waters.
