User Marine Biologist 

Marine Biologist  posted 11451 waymarks in 1127 different categories within 28 countries and 110 regions, of these were 1609 posted-first-in-region and also 486 posted-first-in-country.
Unfortunatly the user also has 243 waymarks with a missing region in the database.

Here is a list of categories, that Marine Biologist currently has not posted in.

Category name
Atlantic Canada Heritage Properties
Korean Historic Sites
Latin American Benchmarks
Southern African Trig Beacons