Overview
- OCEARCH satellite tags recorded a 10ft female called Bella near Newfoundland on June 29 and a 9ft male called Quint moving in the Strait of Belle Isle on July 26, showing individual sharks travelling farther north than in past records.
- Marine scientists link the moves to rising ocean temperatures that push sharks to seek water in their preferred 12–24°C range.
- Experts say UK summer waters fall inside that temperature band and host abundant prey such as grey seals and tuna, so great whites may already make short, hard-to-detect stopovers off British coasts.
- Researchers stress the main concern is ecological: range shifts can displace temperate and polar species and open space for tropical sharks like hammerheads, while fatal human shark attacks remain very rare.
- Conservation and protected populations in the North Atlantic have helped rebuild numbers and drive larger seasonal migrations, with roughly 2,000 great whites estimated to feed in Atlantic Canadian waters each summer.