Jellyfish don't have a heart, or blood, or even a brain.
Bugs and beetles can't hold their breath underwater like we do.
Dermestid Beetles are fast and fastidious eaters.
Chameleons don't change color to match their environment; it's just the opposite.
When it comes to spotting prey, sharks and rays have a sense beyond sight and smell.
How does a group of animals - or cells - work together when no one's in charge?
Some corals look like undersea gardens, gently blowing in the breeze.
Within seconds of rainfall, dried-up moss is revived after being dead for decades.