This week's set
Every Monday the set moves on to the next dive site. You get one dive for each of its six pictures, at mixed levels, so the week has both quick puzzles and long ones.
How the set is chosen
The six dive sites take turns, one per week, in a fixed order. Within the site, each picture contributes one dive, and the level of each dive shifts by one every time the site comes round again — so a picture you played as a Snorkel dive returns later as a Reef, Wall or Deep dive.
Ticking them off
A dive you finish is stamped in your logbook, and the set shows it as done. You can play the dives in any order and over several days; the set stays the same from Monday to Sunday.