• Swimming, Water Recreation

• 541.

Tampa Bay Sea Kayakers Inc

We are the hub of kayaking activity for Florida's central Gulf Coast.

• Natural Resource Conservation and Protection

• 542.

Lake Stewards of Maine

Lake Stewards of Maine is a statewide 501(c)(3) non-profit.

Paddle Florida, Inc.

Paddle Florida: Inspiring. Meaningful.

Michigan Shipwreck Research Association

Michigan Shipwreck Research Association is a 501(c)3 non-profit corporation, whose mission is to preserve and interpret Michigan’s submerged maritime history.

• Single Organization Support

• 545.

Huron-Clinton Metroparks Foundation

We comprise 13 Metroparks in southeast Michigan stretching across 5 counties: Livingston, Macomb, Oakland, Washtenaw and Wayne.

• Recreational, Pleasure, or Social Club

• 546.

Arizona Yacht Club Inc

Yes, really. A Yacht Club in Arizona. We race, cruise and generally just have a good time.

Great Lakes Association of Astronomy Clubs

GLAAC was founded to make it easier for amateur astronomy clubs to collaborate on big events.

• Recreational, Pleasure, or Social Club

• 548.

Tollycraft Boating Club

The Tollycraft Boating Club is a group of boating enthusiasts who: a) own a Tollycraft, or b) are .

NATIONAL MARINE SANCTUARY FOUNDATION

The National Marine Sanctuary Foundation connects people to the underwater places that define the American ocean & Great Lakes.