Jellyfish don’t move the way we thought

What do you think of when you imagine a jellyfish moving through water? Most of us think it is pushing against the water behind it (like a slow water jet) to propel itself forward. But Standford engineers have discovered that we're wrong; jellyfish actually suck water towards itself to swim.

Japanese paludarium 

We have a soft spot for nicely-done paludariums (part aquarium, part terrarium). This dramatic paludarium features a rocky outcrop with water that gently cascades down through moss and aquatic ferns.