• Welcome to TONMO, the premier cephalopod interest community. Founded in 2000, we have built 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 - it's free! You can also become a Supporter for just $50/year to remove all ads and gain access to our Supporters forum. Follow us on Twitter and Facebook for more cephy goodness.

cuttle reaction to changes in light.

Joined
Aug 15, 2005
Messages
410
i was wondering if cuttles have night vision abilities and/or the ability to dicern amounts of light (shadows).

the main reason i was asking is last night i was walking past my tank when the lights were all off in the tank and only a small lamp on the other side of the room was on. as i walked past the tank my cuttle inked and i guess i must have frightened it. The only thing is that it was very dark if i had not been paying attention to the lil guy as i walked buy i would never had seen it. so do cuttles have night vision or could he just see my shadow as i walked in front of the tank.
 
Joined
Nov 22, 2004
Messages
352
As far as I know they do not have night vision, he just saw you shadow when you passed infront of the light in the room. They have similar eye-sight as humans so if you cound see him he probably can see you.
 
Joined
Feb 5, 2003
Messages
373
Also creatures that inhabit water often react to vibration even if they can't see what creates it. Your footsteps combined with low visibility would be enough to make him defensive as he couldn't see whether you were friend or foe. They're a little different, I know fish do this all the time.

Cheers!
 

Jean

Colossal Squid
Registered
Joined
Nov 19, 2002
Messages
4,218
It may also have vision that is triggered by movement. I believe (although anyone can step in here and correct me!!) that many predators do and that this is quite sensitive even in low light conditions!

some speculation anyway!

j
 

tjohnson

Wonderpus
Registered
Joined
Aug 9, 2004
Messages
195
I beleive that by walking infront of the light, it created a flash effect to him, which just caught the little guy off guard and starteled
 

Forum statistics

Threads
20,833
Messages
206,714
Members
8,457
Latest member
DaneMom6800

Monty Awards

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


Top