It lookes much better when shooting close and using a flash, for sure.

A quite often phenomenon: you see nothing, but an empty, deserted area with no living thing around. Then, at the second glance!...
Your breath stops as you realize the wasteland you've been watching a second ago is, in fact, an oasis overcrowded with various fantastic creatures.

By the way, there is a video of this octopus showing deep emotions by changing colour and patterns.