Octopodes excited by high definition television (HDTV)
In experiments evaluating how the creatures react to moving images, the animals responded far more vigorously to HDTV than standard definition TV.
It appears that standard definition moving images are not sufficiently "convincing" for the sophisticated cephalopods, say the scientists.
Researchers can now use HDTV as a tool to study elements of their behaviour, such as personality.
Details of the discovery are published in The Journal of Experimental Biology.
It was a case of the technology not being up to the relatively high standard of octopus eyesight
Octopodes appear to be intelligent animals, that respond to their environment with brilliant colour changes.
In theory, showing moving images to them, of predators, prey or other octopodes for example, would be a good way to study their behaviour.