We snorkled in the Caribbean the last 2 years. Last year, saw an octopus. This year, they must have been pretending to be brown coral, 'cause they were not to be seen.
Wow! I think cephalage would be easier for high tech to implement than the invisibility route it seems obsessed with.
One thing Nature needs to work on next for the Cephalopod is a longer life span. Such complex intelligence should be allowed to last longer. Maybe we will engineer it for them some day.