This is what happens when your home security camera captures a bird flapping its wings at exactly 20 flaps per second – perfectly matching the camera’s frame rate:
And here’s a helicopter’s rotor exhibiting the same effect:
A group of dolphins is called a “pod,” apparently. A group of hundreds of dolphins? Say hello to the Superpod:
Over the last week, a group of common dolphins has been racing along the Pacific coast in Monterey, Calif.
So Patrick Webster, the social media content creator at the Monterey Bay Aquarium, set out on Monday to shoot video of the mammals, working together to corral schools of small fish.
What he captured is a remarkable scene: dozens and dozens dolphins, breaking through the surface and plunging down again, under skies the same gray as the water. Webster said the whole group was thought to number more than 1,000.