Reflecting on 10 years of the Human Genome Project

The hagfish is a slime-emitting ocean-dweller that's remained unchanged for 300 million years--and it shows. It has a skull (but no spine), velvet smooth skin, and a terrifying pit of a mouth that's lined with rows of razor-sharp teeth.

The Hagfish Is the Slimy Sea Creature of Your Nightmares (3:00)

Sand strikers, also known as bobbit worms, are primitive-looking creatures that lack eyes, or even a brain. Despite this, they are savage predators who shoot out grapple-like hooks to reel in passing fish.

This Terrifying Worm Snatches Fish From the Ocean Floor (3:18)

Despite its dry desert landscapes, Utah is a land of surprises, and Glen Canyon is one of them, rivaling Arizona's Grand Canyon for sheer majesty.

Utah's Otherworldly Landscapes (2:20)

Prepare to be amazed.

Ask Smithsonian: What’s a Stone Baby? (1:07)