the massachusetts state police chopper spotted this one near where a man was killed last fall scientists say they have never tagged this many this early. >> i don't even want my toes in the water.rly. >> i don't even want my toes in the water. >> reporter: shark attacks are rare, but there's no denying the close encounters in florida more than 60 sharks spotted just off greaten beach in north carolina, a fisherman bitten when he pulled a shark . out of the water >> he got me >> reporter: and this massive ancient species bigger than the research sub caught on camera by deep sea scientists. the research sub ca >> that is amazing >> reporter: researchers like thomas expect warming sea temperatures to have an even greater impact on shark migration. >> as the temperature shifts, the prey species that they're chasing so that they come in towards shore in different patterns >> reporter: back on the beaches there's impact as well >> there's less people than last year >> reporter: the fear keeping some away.