Just keep swimming!

A terrifying scene unfolded this week when a menacing 10-foot crocodile in Mexico was filmed stalking a petrified tourist as he swam for his life.

Frightening video footage was posted to Facebook this week that revealed an American crocodile methodically slicing through the waters of Sian Ka’an, slowly inching his way closer to his human prey, News.com.au reports.

The boy was miraculously saved when shocked onlookers tossed an object straight at the mighty beast, which sent it quickly darting in the other direction.

Manuel Carrera uploaded the hair-raising video to his Facebook account and said he believed the crocodile had zeroed in on the swimmer, but was luckily slowed down due to his enormous size.

“Unfortunately, that crocodile already associated us with food and as the video shows, the boy was saved because the crocodile is well fed and chased at a pace that allowed [the boy] to reach the shore,” he wrote in the video description.

Carrera urged visitors to stop feeding the local crocodile population, adding that “something should be done now,” according to News.com.au.

The hungry American crocs are common in the area and are said to feed off loads of fish and scraps left by tourists.