Drone footage taken on Sunday at a Mexico beach revealed a frightening situation in which swimmers were overwhelmed by a massive wave caused by Tropical Storm Alvin.

The nearly 2 1/2-minute video shows walls of angry surf crashing onto the sandy shoreline of Icacos Beach, giving three swimmers quite the ride as they bobbed up and down – and sometimes disappeared beneath – the swells.

At about the 1:13 mark, the trio are pushed under as a massive swell comes ashore, with surf covering the entire sandy beach.  

“A group of people swam despite warnings and were swept up by the swell,” Adolfo Kahan Farco, who recorded the video, told Storyful.

While there is no official word on their fate, Farco told Storyful it appeared they escaped unharmed.

The incident occurred after Tropical Storm Alvin, the first named storm of the eastern Pacific Ocean hurricane season, produced giant swells off the coast of southwest Mexico.

This is thanks to peak wind speeds of 60 mph last Thursday.

By Saturday morning, peak winds dropped to 35 mph as Alvin dissipated into a post-tropical cyclone.

But the National Weather Service had warned that the swells left from Alvin would continue to create potentially dangerous surf and rip current conditions along the coasts of west-central Mexico and southern Baja California through the weekend.