HDTV Is Good Enough for the Octopuses

Forget 3-D television; HDTV is good enough for discerning octopuses, so it must be good enough for us. Researchers at Macquarie University in Australia found that gloomy octopuses (Octopus tetricus) placed in a tank and exposed to HDTV of predators, prey, and other other octopuses became very excited. Images broadcast in standard definition TV elicited minimal response.

The reason for the octopuses love of HDTV is simple: they have extremely good eyesight. The high definition and high frame...