Captain Barnacles Bear, Lieutenant Kwazii Cat, Medic Peso Penguin and the crew head off on an adventure to the deepest, darkest depths of the Amazon River in search of a hidden city full of treasure.

The Scientist spoke with marine biologist and barnacle researcher John Zardus about why turtle barnacles—previously thought to be immobile—in fact slowly travel. He thinks the answer is food. Chloe ...

For eight years he studied barnacles: his “patient dissection of thousands of smelly little sea animals” so impressed his children that they assumed that everyone in the world was similarly ...

Professor Natquik is Captain Barnacles' old friend. He taught Barnacles how to do field research when he was a Polar Bear Scout. Min is a red panda who lives in China beside the Yangtze River.

Your child can still help Captain Barnacles and Tweak clean up and rescue the sea creatures in the Deep Sea Rescue game.