
Reef/Day Octopus
The Reef Octopus - Octopus cyanea is also known as Day Octopus as they are often seen during day time.
The can camouflage very well in their surrounding, making their appearance not only smooth, but also with appendages to make themselves looks like rocks or corals.

''Octopus cyanea'', also known as the big blue octopus, day octopus and Cyane's octopus, is an octopus in the family Octopodidae. It occurs in both the Pacific and Indian Oceans, from Hawaii to the eastern coast of Africa.
''O. cyanea'' grows to 16 cm in mantle length with arms to at least 80 cm.
The type specimen was collected off Australia and is deposited at The Natural History Museum in London.