Participate to win the right to call yourself "Pacificklaus certified cephalopod expert". If you are in Sydney and win, I might buy you a beer, too.
Question: what is the difference between the left and the right images:
1. A male/female animal.
3. A gay/straight cuttlefish.
4. The same animal, in a different behavioral state.
5. A different species of cuttlefish.
There is still a chance to join me in the Philippines in September for some top underwater photography at the Evolution Photoganza. September 17-22 in one of Asia's prime dive spots!