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.

In the following list are the categories listed where Marine Biologist is or was an officer. The star denotes an active officer role, if it is golden then Marine Biologist is also the current leader of the category.

active	Category	# Approvals
	Anglican and Episcopal Churches	764
	Artistically Decorated Utility Boxes	701
	Bandshells	104
	Baptist Churches	618
stars	Battery Powered Personal Transport Rentals	2
stars	Big Brothers Big Sisters	40
stars	Bobsleigh Chutes and Mountain Slides	13
stars	Botanical Gardens	71
	Broken Column Headstones	165
stars	Coin-Operated Fortune Telling Machines	149
	Dance Clubs	43
	Daniel Boone Trail Markers	4
	Dated Architectural Structures Multifarious	55
	Dead Poets' Society Memorials	535
stars	Defunct Amusement Parks	30
	Denny's Restaurants	275
	Dog Statues	148
	Dovecotes	19
	Earth Homes	28
	Eternal Flames	53
stars	Florida Historical Markers	696
stars	Gifts from Other Countries	230
stars	Glaciers	5
	Graves Mentioning a Cause of Death	145
	Household Appliances and Presses	4
	Irish-American Historic Places	45
stars	It's All About Tintin	23
	John F. Kennedy	48
	Junk Design Houses	3
	LEGO Sculptures and Models	6
stars	Magic Shops	32
stars	Maritime Museums	128
	Moose Lodges and Centers	64
	Nebraska Historical Markers	26
	Occupational Monuments	46
stars	Old Spanish Trail Auto Route	96
	Orthodox Churches	22
	Outdoor Altars	5
	Outdoor Amphitheaters	233
	Ovens and Kilns	79
stars	Peace Memorials	134
	Planetariums	68
stars	Presidential Birthplaces	30
stars	Rhode Island Historical Markers	73
	Skyscrapers	28
	This Old Church	1645
	Viquesney's Spirit of the Doughboy Statues	16
stars	Volcano Watching	12
	Whispering Galleries	4
	Wikipedia Entries	4318
	Zinc Headstones	100
	Zippy the Pinhead Locations	98