“We're definitely seeing some shark species that I would say aren't typical for the neighborhood,” said Ryan Knotek, a research scientist with the Anderson Cabot Center for Ocean Life at the New England Aquarium. They’re likely here because of climate change, Knotek said. Ocean temps in the North Atlantic are some of the highest ever recorded, according to data from the University of Maine's Climate Change Institute. And data from 2019 showed New England waters were warming more than anywhere else in the country. The newcomers join an established ecosystem of shark species like the shortfin, mako, porbeagle, thresher and great white.