In a sandy gully, a school of razorfish are being stalked by an invisible predator and a master of disguise: the crafty cuttlefish.
Deep beneath the sea, bizarre and remarkable creatures lurk, featuring a collection of extreme adaptations developed over 500 million years of evolution. Witness a strange showcase of fish, from crushing jaws to glowing eyelids to gaping maws, and get an up-close look at some of the weirdest, fastest, wildest, and mightiest creatures in the watery underworld. It's a glimpse of nature like you've never seen before, and we're giving you a front row seat.
Now, you can watch Smithsonian Channel's incredible documentaries and shows anytime you want by purchasing from any of these distributors:
Access even more free Smithsonian Channel full episodes and documentaries online through participating TV providers.
Find out if your television provider carries Smithsonian Channel on air.
Don't panic! It's simple to upgrade to the latest version of one of these browsers:
Don't panic! To get the best possible experience on smithsonianchannel.com we recommend you upgrade your operating system.
For the best possible site experience, please use Chrome for Android.
Add username "SmithsonianChan" on Snapchat for fun and fascinating facts. We'll be sharing spontaneous photos and videos as inspiration strikes.