July 30, 2018 โ Warmer waters are pushing the animals further north into previously shark-free waters. Should we be worried?
Shark Week, Discovery Channelโs annual homage to the oceanโs most infamous predator, comes to a close this weekend.
But residents of northeastern states like New Yorkโlong considered a relatively shark-free zoneโmight not have to wait until July 2019 to see more, as global warming has been linked with a significant northern shift in the habitats of most marine animals, including most sharks.
โThereโs an astounding mass migration of animal life towards the poles,โ Malin Pinsky, an associate professor in Rutgersโ Department of Ecology, Evolution, and Natural Resources, told The Daily Beast. In his work with spiny dogfish, a thin, small shark that lives along most of the East Coast, heโs seen their habitat shift โquite substantially.โ
Pinsky isnโt the only scientist to make this observation. In April, researchers in North Carolina published a paper in Natureโs Scientific Resources that documented the northern migration of bull shark nurseries.
By analyzing data from North Carolinaโs Division of Marine Fisheries (NCDMF), the researchers found that between 2003 and 2011, when water temperatures in the sound were hovering closer to 22 degrees Celsius, only six juvenile sharks were caught in the area. But as temperatures began to rise, a group of bull sharks migrated from their previous home in Northern Florida and established a nursery in Pamlico, causing a drastic uptick in juvenile shark presence. Between 2011 and 2016 alone, NCDMF found 53.
Read the full story at The Daily Beast