User Marine Biologist 

Marine Biologist  posted 11450 waymarks in 1126 different categories within 28 countries and 109 regions, of these were 1593 posted-first-in-region and also 486 posted-first-in-country.
Unfortunatly the user also has 59 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