Bananas for Scale
Giant Pacific Octopus

Photo from Wikimedia Commons

Giant Pacific Octopus

The ocean's smartest invertebrate with three hearts and blue blood/Marine Life

The giant Pacific octopus (Enteroctopus dofleini) is the largest octopus species, with an arm span of up to 6 meters and a mass of around 50 kg. It has three hearts, blue blood (copper-based hemocyanin), nine brains (one central, one in each arm), and can squeeze through any opening larger than its beak. They can change color and texture in milliseconds, solve puzzles, open jars, and have been known to escape aquariums through plumbing.

Measurements

Arm span6 m
7.89Cello lengths
2.96Door heights

Up to 6 meters from arm tip to arm tip

Weight50 kg
11.1Adult house cats
500 millionthsLocomotive weights

About 50 kg; record specimens over 70 kg

Jet speed11 m/s
3.5 tenthsHighway cars
6.9 billionTectonic plates
956,522Bamboo growths

About 40 km/h in short bursts via jet propulsion

Mantle length6 tenths m
5.6 tenthsHurdle heights
10Thumb lengths
5.26Popsicle lengths

Body (mantle) about 60 cm

Sucker diameter6.5 hundredths m
108 millionAspirin molecules
4.3 thousandthsGarden hose lengths
1.55Watch face widths

Largest suckers about 6.5 cm across

Lifespan126 million s
46,667Oil changes
4.2 millionElevator ride durations
5.21Human pregnancies

Only 3-5 years; tragically short for such intelligence

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