Day octopus in the waters off Maui, Hawaii

Camouflage in motion. World Octopus Day

With eight arms and plenty of charm, the octopus takes the spotlight today. On World Octopus Day, as we reflect on their brilliance, we're reminded that even these ocean geniuses can't outsmart threats like climate change and pollution. Protecting their homes means safeguarding the future of our seas.

Meet the master of disguise—the day octopus (Octopus cyanea). Found across the Pacific and Indian Oceans, from Hawaii to Africa's eastern coast, this reef-dweller is a true shapeshifter. Unlike most of its kin, it hunts in broad daylight, instantly shifting its color, pattern, and even skin texture to blend into its surroundings. At times, it even performs a clever 'passing clouds' act, casting a false shadow to trick crabs into moving at just the wrong moment. And once the trap is sprung, the hunter wastes no time. A skilled predator, this octopus prowls the reef for fish, crabs, shrimp, and mollusks. Smaller catches are devoured on the spot, while larger prey is dragged back to its den.