It's one thing to get a high-five from a dog, but a whole other thing to get one from a ginormous humpback whale.
Though it does not seem like the "smack," was intentional, we hope this cameraman, diving off the coast of eastern Africa, learned his lesson to not get too close to a whale and her calf.
According to National Geographic, humpback whales can be up to 62 feet long (longer than a bus!), and weigh as much as 40 tons. Though they are omnivores and generally gentle creatures, it can be dangerous to get too close to an animal of that size, as evidenced by the video.
[H/t Viral Viral Video]