Things are not always as they appear. The morpho butterfly appears to have blue wings, but they don't contain a drop of blue pigment. Learners watch as the instructor explains the physics behind these amazing blue wings.

Cuttlefish are actually not fish — they are relatives of the octopus, squid, and nautilus! Scholars explore this concept and more as they observe cuttlefish and their ability to change their coloring through chromatophores. Viewers...