Researchers at Florida Atlantic University say blacktip sharks are spending more of the summer farther north along the US East Coast, reaching areas such as Long Island where they were historically encountered less often. The finding matters because warming seas may be changing the sharks’ seasonal migration patterns and increasing their visibility to beachgoers.

The advisory was published during Shark Week and focuses on blacktip sharks, a species known for coastal migrations. According to the article, warmer ocean temperatures are allowing the sharks to travel farther north before returning south, although the provided text does not give specific population figures or describe an increase in attacks.