Ranked by: number of candidates
1.
Coastal and maritime environment (18620 candidates) 

2.
Sea and fishes (7658 candidates) 
3.
Do It Yourself (6285 candidates)
4.
Deep Sea Diving (4257 candidates) 
5.
By sail or by oar (2762 candidates) 

6.
Shellfishes and Crustaceans (2378 candidates)
7.
Marine weather terminology (2194 candidates) 
8.
Shells and crustaceans (2186 candidates)
9.
Crew on a boat (1787 candidates) 
10.
Gardening (1675 candidates)
11.
The legend of Mont-Saint-Michel (1393 candidates)
12.
Water fun on a sail board (1341 candidates) 
13.
Politeness at sea/Flag etiquette (1273 candidates) 

14.
Sea states (1214 candidates)
15.
Mont Saint-Michel (1035 candidates)

