The scene you are witnessing, captured by Penny Fenton with an AmScope T490B microscope and an iPhone, has been zoomed in 80 times and it's about 10 mm. It contains a tardigrade riding a volvox [source, IG account with more video: buff.ly/3iJrY0N-]

Octopuses are masters of camouflage. But how do they do it? 🐙👀 Chromatophores cells sit under their skin and have tiny sacs filled with red, orange, brown, yellow or black pigment. When the sac expands, the colour becomes more visible.

Curious embryo fact 1/25 The embryo is the only machine that needs to function while it is being built. This is made possible by extraembryonic tissues. They allow the embryo to breathe without lungs and to eat in the absence of digestive organs. #embryo #reproduction