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I think these might be juvenile cuttlefish. I photographed the pair at a depth of about 15m, at a dive site called Coral Gardens, off the island of Talikud, Samal, Philippines.
Its not juvenile, the pair are a pair of Adults, courting.
You can see the different in colors, which they shows when courting.
They are rather small in size, around 2-3 inches at full Adult.