Smooth hammerhead sharks are popping up all over Massachusetts waters this summer—fishermen and boaters are spotting them near Buzzards Bay, Martha’s Vineyard, and Nantucket. Warmer water is bringing these rare visitors north, and experts say even more southern sharks (like blacktip and maybe even bull sharks) could be on the way. The good news? Hammerheads aren’t really interested in humans, but they look wild and are easy to spot. If you see one, snap a pic and report it! #Science #SharkSighting #Massachusetts