doing 3D underwater is a challenge both in term of technique than in term of unpredictable moments. Looking desperately for whales for more than 10 days, The team had to modify the production planning by filming wonderful and friendly moray eels. This shows both that it is impossible to take an appointment with Nature and one can only appreciate its beauty he/she is invited to see. Wild animal don't always accept noise or huge equipment in their environment, specially predators. The team had to face technical constraints to satisfy the fact the camera should be very flexible (while 3D) and can follow the extreme performance of Pierre Frolla.