HOME >> BIOLOGY >> NEWS
Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

Berkeley -- Two species of tropical octopus have learned a neat trick to avoid predators - they lift up six of their arms and walk backward on the other two.

This first report of bipedal behavior in octopuses, written by University of California, Berkeley, researchers, will be published in the March 25 issue of Science.

When walking, these octopuses use the outer halves of their two back arms like tank treads, alternately laying down a sucker edge and rolling it along the ground. In Indonesia, for example, the coconut octopus looks like a coconut tiptoeing along the ocean bottom, six of its arms wrapped tightly around its body.

UC Berkeley graduate student Crissy Huffard clocked the two-legged speed of one coconut octopus at two and a half inches per second, while a second individual zoomed along, backwards, at five and a half inches per second. This is faster than they can crawl, but probably slower than they jet around.

The other type of octopus, which camouflages itself as algae in tropical waters from Indonesia to Australia, looks like a sea monster scooting along the sea floor on two legs. Huffard filmed this creature off Australia's Great Barrier Reef easily rolling over rocks and other obstacles.

"This behavior is very exciting," said Huffard, who first noted it five years ago in the coconut octopus but only recently was able to capture both types of octopuses on film. "This is the first underwater bipedal locomotion I know of, and the first example of hydrostatic bipedal movement."

Huffard and coauthor Robert Full, professor of integrative biology at UC Berkeley, think that this bipedal walking is a strategy octopuses use to backpedal away from predators while remaining camouflaged. Octopuses camouflage themselves by changing both color and shape, but when startled and forced to move quickly, they have to give up their camouflage.

Not so when walking.

"This bipedal behavior allows them to get
'"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
24-Mar-2005


Page: 1 2 3 4

Related biology news :

1. LSU professors monkey around with the Rhesus Macaque genome
2. Networking around the clock
3. Ring-around-the-cell
4. Evolution and the workaround
5. CU-Boulder space station experiments to involve K-12 students around the globe
6. Extraordinary life found around deep-sea gas seeps
7. Tiny shock absorbers help bacteria stick around inside the body
8. Academics from around the world to discuss animal welfare
9. Coming soon: 3-D imaging that flies through and around cancer
10. Brazil creates buffer zone around coral reefs off Atlantic coast
11. Give an ant a nice place to stay and it might stick around

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/1/2020)... ... April 30, 2020 , ... ... Siemens Healthineers and several healthcare VC firms announces an official launch of CareDoctors.com. ... is to enhance patient care experience by offering live video consultations with board ...
(Date:5/1/2020)... SEATTLE (PRWEB) , ... April 30, 2020 , ... ... for emerging infectious diseases, announced today that it had been awarded a contract ... of the Assistant Secretary for Preparedness and Response at the U.S. Department of ...
(Date:4/30/2020)... ... April 28, 2020 , ... Pebble Labs USA ... challenges in agriculture and aquaculture with the mission of improving global food security, announced ... F&A Next ' Next Heroes in Food- and Ag-Tech ' virtual event, a global ...
Breaking Biology News(10 mins):
(Date:4/26/2020)... ... April 23, 2020 , ... ... today, an online store providing applications and services for use on Microsoft Azure. ... business needs to sign up online for a built-for-purpose customer engagement capability to ...
(Date:4/22/2020)... ... April 20, 2020 , ... ... MA, announced today that Omixon’s founder and chairman Dr. Attila Berces returns as ... product Holotype HLA since 2014 before stepping into the CEO role in 2017. ...
(Date:4/22/2020)... ... April 21, 2020 , ... Ripple Science ... Many clinical trial teams are working remotely and have paused patient visits, forcing ... researchers continue their research during this uncertain time by giving research teams free ...
(Date:4/7/2020)... (PRWEB) , ... April 06, 2020 , ... Gateway ... future children, reached 200,000 SneakPeek Early Gender DNA Tests sold in March, ... was launched as an ecommerce product, where a mom could order her kit ...
Breaking Biology Technology:
Cached News: