Story
Tiny builders
The Coral City
A giant coral reef is built slowly over hundreds of years by animals smaller than your fingertip.
Animal group
Sea creature wonders
Story
Extra beats
Three Hearts, One Octopus
An octopus has three hearts, and one of them stops beating every time it swims.
Story
A body built to heal
The Starfish's Second Chance
If a starfish loses an arm to a hungry predator, it can often grow a brand new one back.
Story
Backward grower
The Time-Traveling Jelly
One tiny jellyfish can grow younger instead of older when life gets hard, essentially reversing its own aging.