A minke whale breaks the surface near Boothbay Harbor in the Gulf of Maine on Aug. 10, 2018. Researchers say warming in the gulf is driving whales into waters farther north where fewer environmental protections exist.

A minke whale breaks the surface near Boothbay Harbor in the Gulf of Maine on Aug. 10, 2018. Researchers say warming in the gulf is driving whales into waters farther north where fewer environmental protections exist.