This is the most accessible underwater photography for most beginners but getting it right is a whole other story. The tricks and local knowledge needed to understand the beasts and their habitats is essential and is mostly packaged into a local dive master who is on site every day through all seasons and who may be a photographer or naturalist themselves. Your guide needs an intimate knowledge of the ocean and will be easily identifiable by their keen interest in the creatures they spot as opposed to a generic dive leader who pays more attention to being the leader and those following him/ her. The next skill needed is economical air consumption and the correct qualifications which mean you don't need to go along with the group as macro takes time, a lot of time. I have spent whole dives photographing one subject and then gone back on the next dive to do exactly the same but from different angles with different camera setups.