A 20-foot-long Minke whale has died after it collided and nearly capsized a pleasure boat in New Jersey's Barnegate Bay on Saturday.

A woman was knocked from her boat off the Jersey Shore when a distressed whale bashed the vessel – sending her flying into the frothing waves, shocking footage shows.

A minke whale died off the New Jersey shore after a collision that nearly tipped over a small boat and threw a person overboard. Social media video of the collision in Barnegat Bay on Saturday afternoon shows the motor boat rocking after the impact and the 20-foot (6-meter) whale splashing near the craft before swimming away.