11M views · 86K reactions | Just how smart are octopuses? One is put to the test in this watch-and-learn challenge. | National Geographic Animals | Facebook

Just a month after mating, a female octopus can lay as many as 100,000 eggs. | National Geographic

13M views · 80K shares | With the ability to grow up to 30 feet (9 meters) long, the giant Pacific octopus has been known to eat sharks. | National Geographic | Facebook

1M views · 7.7K reactions | This octopus hitched one of the coolest rides around—a mako shark. While this might not necessarily be the case here, animals do sometimes latch onto other organisms for travel purposes. It's a phenomenon called phoresy: https://on.natgeo.com/3RyQ5lo Video: University of Auckland | National Geographic | Facebook