Cruz was on a night dive with his dad when he saw a pair of bigfin reef squid in the shallow water. One swam off but Cruz quickly adjusted his camera and strobe settings, knowing that the opportunity was too good to miss. He shot four frames of the remaining squid before it too disappeared into the inky blackness.

Bigfin reef squid are masters of camouflage, changing their body colour and pattern using their reflective and pigmented skin cells. They also alter their appearance to help them communicate. During courtship, males and females display complex patterns to indicate their willingness to mate.