Like most snakes, the sidewinder moves across a surface by bending its body into a curvy S-shape and passing those curves down its body. But instead of sliding straight ahead along the ground, the sidewinder sets only parts of its body on the loose sand while the rest of its body lifts up and moves sideways.

How does a rattlesnake move?

Rectilinear locomotion is the primary method of travel for most rattlesnakes. While traveling in this manner, the rattlesnake will usually lie in a straight line and inch forward by using its ribs much like a caterpillar or millipede would use its legs. Rectilinear motion is not fast, nor is it intended to be.

What is snake movement called?

Serpentine movement

This is the motion used by most snakes. The serpentine movement consists of a wavy, S-shaped movement, for that reason is also known as lateral undulation.