🐙 Giant Pacific octopus vs Moon jellyfish 🪼
The giant Pacific octopus is about 7 times as long as the moon jellyfish.
| Row | 🐙 Giant Pacific octopus | 🪼 Moon jellyfish |
|---|---|---|
| Top speed Neither has a checked number yet. | no checked number yet | no checked number yet |
| Weight We don't have a checked number for the moon jellyfish yet. | 31 to 51 lb14 to 23 kg1 | no checked number yet |
| Lives We don't have a checked number for the moon jellyfish yet. | 3 to 5 years3 to 5 years1 | no checked number yet |
| Eats The giant Pacific octopus eats meat; the moon jellyfish eats tiny floating sea life. | crabs, clams, shrimp and fish | plankton, tiny animals and fish eggs |
| Lives in They can live in the same kind of place. | the cold North Pacific, from California to Japan | coastal waters all over the world |
Which one? Giant Pacific octopus or moon jellyfish
🏁 Who would win the race?
We don't have a checked top speed for the giant Pacific octopus or the moon jellyfish yet, so there is no race.
We only race. Real animals mostly avoid each other. A race is the only fair contest: who reaches the tree first, by top speed.
Compare two more
Getting the animals ready…
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The link carries only the two animals’ names: peabody.kids/animals/compare/giant-pacific-octopus-vs-moon-jellyfish
Where these numbers come from
- NOAA Fisheries, Alaska Fisheries Science Center, checked 30 October 2026.
- National Park Service, Fort Matanzas National Monument, checked 30 October 2026.