
Getty Images
Octopuses Don't Have Tentacles!
By:
Mel Kassel
What exactly do these cephalopods have then?
August 01, 2019
Many people refer to octopus limbs as tentacles, but technically, octopuses don't have any tentacles at all! Instead, they have arms. When you're talking about cephalopods, tentacles tend to be much longer than arms and only have suckers at their "clubbed" ends, whereas arms are shorter, stronger, and suckered all the way down. Tentacles also typically come in pairs. Squid and cuttlefish have eight arms plus a pair of feeding tentacles.
This article first appeared on Curiosity.com.
Next Up
Do Octopuses Dream?
New footage shows a sleeping octopus changing colors, indicating the creature may be dreaming.
This Giant Mushroom Is the Largest Organism Ever
These fungi are larger than blue whales and dinosaurs!
Earthworms Aren't as Good for the Soil as You Think
Are worms really an invasive pest outside of the garden?
99 Percent Of The Earth's Species Are Extinct—But That's Not The Worst Of It
There's been a vast diversity of life that has existed is now extinct.
Through the Eyes of Nature: What Animals Can See That We Can't
When scientists began looking closely at a moth’s eye they discovered a nanostructure on the surface of their eyes, which were named the corneal nipple-array. Those tiny little structures essentially assisted the moth in gathering light from the surrounding world it flies through.
3 Animals That Mourn Their Dead
Grieving customs aren't just limited to humans.
70% Of Earth's Fresh Water Is Frozen
Our freshwater is locked up in the Antarctic Ice Sheet.
Cows Kill More People Than Sharks
Sharks are the least of your problems according to these statistics.
Why Do Birds Have Hollow Bones? It's Not to Make Them Lighter
Do hollow bones really help birds fly?
Rare Blue Ghost Fireflies Only Glow in One Part of North America
These insects emit a glow a yellow-green hue.