Marine Life

You'll spend most of your dives looking at things that don't care you're there. This is the biology behind the animals you meet, with the data rather than the folklore. The shark article is the one to send to nervous relatives.

Filter:octopus camouflage

August 26, 2026
4 min read

How Do Octopuses Change Colour So Fast, Despite Being Colourblind?

Octopuses colour-match reefs in under a tenth of a second, despite being colourblind. Here's how chromatophores, iridophores, and light-sensing skin make it happen.