What you see here when looking through a stereoscope is a 2D picture of a plant followed by the same plant in a 3D view. Your vision transitions from monocular to stereoscopic and back. The plant comes alive and pops in 3D compared to 2D.
I took three photos of this plant using the stereo cha-cha camera method: left, center, and right. After aligning the 3D photo formed by the left and right photos in Stereo Photo Maker and aligning the center photo with the 3D photo in Photoshop, I made this GIF image.