A megapod of dolphins, often referred to as a “stampede," was spotted off the coast of Laguna Beach, California swimming alongside a boat of onlookers for 25 minutes, the BBC reports.
Whalewatchers aboard a catamaran near Dana Point, California, witnessed a similar occurence in 2016.
[youtube https://www.youtube.com/watch?time_continue=47&=&v=kwq9UXY76qI expand=1]
“This breathtaking behavior can happen at any time and without any apparent cause. Porpoising is the fastest mode of travel for dolphins because there is less resistance in air than water," according to the crew at Captain Dave's Dolphin and Whale Watching Safari.