Their head is large, with red eyes. They do not have actual teeth, but rather sharp projections of the bones in the skull and jaw. Varuna have two large front limbs with which they can haul themselves up from out of the water. The back limbs have atrophied to stubs.
As with most cykrons, they eat meat, often ambushing passing prey from under the water. They are the only apex predators of the Lankan waters.