• Welcome to TONMO, the premier cephalopod interest community, and birthplace of #WorldOctopusDay and #CephalopodAwarenessDays. Founded in 2000, we are a large community of experts, hobbyists and enthusiasts, some of whom come together when we host our biennial conference. To join in on the fun, sign up. You can also become a Supporter for just $50/year to remove all ads and enjoy other perks. Follow us on Twitter for more cephy goodness.

new walking octo video

Joined
Feb 5, 2003
Messages
373
Interesting how they walk and jet backwards. There are clear advantages to jetting backwards, but walking? You'd think it would be better to face where it is you're going...unless over course you are trying to keep tabs on a pursuing predator.

Cheers!
 

mucktopus

Haliphron Atlanticus
Staff member
Moderator
Joined
Dec 31, 2003
Messages
527
Joined
Jan 6, 2003
Messages
476
Only dis-advantage when jetting backwards is of course...bumping into nearby rocks and boulders under the sea. I actually never knew they swam "backwards" until a few years ago when it was described that way. I always thought the way they swam was foward because it's the way they have always gone...even traveling across the seafloor with their arms, the mantle always led the way. But I guess the way they see determines that they actually move backwards most of the time.
 

tonmo

Cthulhu
Staff member
Webmaster
Joined
May 30, 2000
Messages
10,396
Thanks muckoctopus -- would like to have you as an Octopodcast guest sometime soon if I could!
 
Joined
Apr 8, 2004
Messages
287
Is that some sort of mimicry behaviour? The second one could be mimicing a lionfish or something.

If it wasn't benificial then they wouldn't do it would they. Anyway im baking bread so got to run!

~A
 
Joined
Dec 8, 2005
Messages
73
:welcome: again, octofriends. At last I've finish exams!!!

I'm not agree with Andy, I think this is a method to try to hide the legs end out of the predator. Maybe i'm wrong and it is imitating a coconut.But coconuts swim in the seawater surface.

The second one is clearly a method to imitate a sea des-rooted plant.

Sorry for my poor english, give a little patience.

Cheers
Carles
 

mucktopus

Haliphron Atlanticus
Staff member
Moderator
Joined
Dec 31, 2003
Messages
527
Lionfish aren't very common where A. aculeatus live, they're nocturnal (rather than the diurnal octos), and they're fairly brightly colored, so the octos probably aren't mimicking them. As for what it might be trying to look like in the second picture with the "simething new soon" label- I can't think of a specific item on the reef flat- dead rotting algae, black plastic bag...who knows. If it is aiming for a visual defense, it might be effective just to sent the signal "you're not looking at an octopus" to a potential predator without needing a specific model to mimic. It could also bring the arms closer for some hydrodynamic advantage over the sprawled posture.
 

Latest Posts

Forum statistics

Threads
20,928
Messages
206,989
Members
8,492
Latest member
DHF8

Monty Awards

TONMOCON IV (2011): Terri
TONMOCON V (2013): Jean
TONMOCON VI (2015): Taollan
TONMOCON VII (2018): ekocak


Top