7 Incredible Octopus Facts That'll Make You Love Cephalopods

Ancient Existence: Octopuses date back almost 300 million years, pre-dating dinosaurs, with the oldest known fossil belonging to the Pohlsepia species.

Tool Use: Veined octopuses and giant Pacific octopuses have demonstrated tool use, with the latter unlocking a childproof pill bottle in five minutes.

Master Shapeshifters: Octopuses can change color rapidly, with the mimic octopus even altering its body shape to imitate various underwater objects for camouflage.

Triple Hearts: Octopuses have three hearts; one for organs and two for gills. The systemic heart stops beating during swimming, leading to a crawling preference.

Blue Blood: Their blood contains hemocyanin, a copper-based protein that turns it blue, enabling efficient oxygen transport in deep, cold waters.

Venomous Defense: While most octopuses have minimal venom, the small blue-ringed octopus can paralyze an adult human and has enough poison to kill 26 humans within minutes.

Playful Nature: Octopuses display playful behavior, engaging with toys and showcasing individual responses and temperaments.