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Nonprofit · EIN 86-0792803

SONORAN SEA AQUARIUM

Also known as SONORAN DESERT WATERS INSTITUTE, Sonoran Desert Waters Institute

Tax-exempt · TUCSON, AZ 85748

Address and contacts

Address (IRS master file)
1805 S CEYLON PL, TUCSON, AZ 85748-7602
In care of
% PAT LEITNER
Mailing address (990-N for 2010)
1805 S Ceylon Place, Tucson AZ 85748
Principal officer (990-N for 2010)
Shannan Marty, 6770 W Via Tres Casas, Tucson AZ 85743

What it must file and when

IRS records say it files Not required. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026Not on file
2024December 31, 2024May 15, 2025Not on file
2023December 31, 2023May 15, 2024Not on file

At risk of automatic revocation

None of the last three returns is in the IRS public files. The IRS revokes tax-exempt status after three consecutive years without a return. Recent filings can take a few weeks to appear.

IRS record

EIN
86-0792803
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1997
Accounting year ends
December
Files
Not required
Category (NTEE)
Animal-related (D500)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2010
Officer: Shannan Marty
December 31, 2010≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 86-0792803).

Questions about SONORAN SEA AQUARIUM

What is the EIN of SONORAN SEA AQUARIUM?
The employer identification number (EIN) of SONORAN SEA AQUARIUM is 86-0792803.
Is SONORAN SEA AQUARIUM tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1997.
Are donations to SONORAN SEA AQUARIUM tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SONORAN SEA AQUARIUM file?
Form Not required.
When is the next return of SONORAN SEA AQUARIUM due?
The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SONORAN SEA AQUARIUM last file with the IRS?
The latest return in the IRS public files is the 990-N for 2010 for the year ended December 31, 2010.
Who is the principal officer of SONORAN SEA AQUARIUM?
The 990-N for 2010 names Shannan Marty.

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