Watch footage of the encounter here.
As frightening as the rare incident looks, neither Frink or Sayers were injured, though the boat was damaged and a cellphone was lost. Another vessel nearby watched the event unfold came and plucked the pair from the water shortly after.
Frink called the incident a "freak accident", stressing that the he and the boat captain weren't trying to get too close, and that the massive animal went on its way as if nothing had happened.
"I can also assure you that the whales weren't hurt, as they continued to feed nearby for hours afterward (observed from our rescuer's boat, and from Vessel Assist.) It was an accident, the one in a million risk that you take when going into the deep ocean on a small boat," says Frink.
Blue whales can reach lengths nearing 100 feet and weigh up to 185 tons, feeding almost entirely on small crustaceans called krill. Such incidents of whales accidently bumping into boats is considered extremely rare.