However, besides handling a camera, there is something else that goes into taking photos and shooting video underwater: Diving in a way that doesn't scare skittish critters like this octopus away from you. Buoyancy control that lets you stay close to the bottom without touching it. Finning technique so you don't stir up the sand and spoil the viz. Reverse kicking so you can back up from the object while keeping your eyes and camera pointed at it. Awareness of your team and your gas supply so you don't suddenly find yourself without either (or both) once you're done shooting. These are all things that I can help you with in the various courses that I teach at Arkipelago Divers/Tech Asia in Puerto Galera, Philippines.
Interested? Then hit me up for diving or courses and join the fun!