Why can starfish move equally well in any direction?

Starfishes are  spiny-skinned sea animal that live in all
oceans of the world. They have thick spikes or arm-like extensions on the
body.

Starfishes are able to move equally well in any
radial direction because of the structure of their body. The body of a starfish is made
up of a center with five or more spikes radiating out of the center like spokes of a
wheel.

Most kinds of starfish have five such spikes. This
makes them look like five pointed stars. Some species of starfishes have as many as 40
or more spikes.

These spikes, which are used by the
starfish for many different activities including movement, make it possible for the
starfish to move in any radial direction with equal ease.