Octopus from Similan, Thailand

Hi,
this octopus was posing for me at Similans, Thailand in February this year. Any input to id it down to species would be greatly appreciated :)

Thanks,
// Magnus;

Wow, what a great photo!

Thanks :)

// Magnus;

It is a common reef octopus. Scientific name Octopus cyanea.

Brilliant, thanks!
// Magnus;