Watch: Humpback whale almost crushes kayakers

Two kayakers had a very close encounter over the weekend as a breaching humpback whale landed on top of them.

Onlookers during a Sanctuary Cruises whale tour outside of Moss Landing, Calif., saw the whale take the couple under the water.

"Humpbacks were coming up next to and in the middle of many kayakers. It was amusing. It's all fun and games until someone gets jumped on," Sanctuary Cruises wrote underneath a YouTube video of the incident published on Sept. 13. "The next thing we knew, this thing launched right on top of these two kayakers. That was heavy."

Video of the frightening sight was taken by Sanctuary Cruises passenger Larry Plants.

"Kayaking with whales can be extremely dangerous. It can turn into a life or death situation real quick-like. Within seconds. It was very scary to watch," Captain Michael Sack of Sanctuary Cruises wrote on his website. He witnessed the encounter. "They came very close to getting crushed to death by the mighty humpback whale. A full-size humpback can weigh in at 40-tons. That's a lot of heavy blubber that would surely flatten a kayaker if the whale had a direct hit," Sack wrote.

According to Yahoo News, one of the kayakers called it "the most extraordinary thing to happen to me."

"We were taken under the water by the whale, perhaps in the down-draft." he said. "I think it brushed against me while I was out of the kayak... Neither of us know how we weren't ended there and then."

Other kayakers in the area helped the couple empty their kayak and return to the water, Yahoo reports.