- Revenue 2024
- $20,483,968
- Expenses 2024
- $17,173,437
Program services were 76.8% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.
As filed
- Subsection
- 03
- NTEE code
- A500
- Classification
- 2100
- Street
- 10 N WATER ST
These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).
Mission and programs · 2024
Mission
THE MARITIME AQUARIUM AT NORWALK SEEKS TO IGNITE A CONNECTION TO LONG ISLAND SOUND AND THE OCEAN TO ENRICH THE LIVES OF ALL PEOPLE AND INSPIRE ACTION TO PROTECT OUR BLUE PLANET.
Activities or mission (Part I)
SEE PART III, LINE 1.
-
THE MARITIME AQUARIUM AT NORWALK FULFILLS ITS MISSION THROUGH ITS LIVE ANIMAL EXHIBITS THAT FEATURE APPROXIMATELY 7,500 ANIMALS, COMPRISED OF ABOUT 300 SPECIES, INCLUDING THOSE THAT ARE ENDANGERED, THREATENED OR PROTECTED. WITH 75 EXHIBITS, INTERACTIVE AND IMMERSIVE EXPERIENCES, TOUCH TANKS, AND ANIMAL FEEDINGS, GUESTS CAN BETTER APPRECIATE THE WONDERS OF THE RICH MARINE BIODIVERSITY OF THE LONG ISLAND SOUND THE GLOBAL OCEAN AND LEARN HOW TO SERVE AS STEWARDS OF THE ENVIRONMENT. COMPLEMENTING ITS EXHIBITS AND GUEST ENGAGEMENT, THE AQUARIUM CONDUCTS NUMEROUS RESEARCH AND CONSERVATION PROJECTS WITH BOTH PROFESSIONAL RESEARCHERS AND COMMUNITY SCIENTISTS TO BETTER UNDERSTANDING THE ECOLOGY OF THE LONG ISLAND SOUND AND TO RESTORE ITS ECOSYSTEM TO A HEALTHY, SUSTAINABLE CONDITION. THE AQUARIUM FURTHER ENGAGES WITH GOVERNMENT AND INSTITUTIONAL PARTNERS TO SUPPORT THE LOCAL COMMUNITY AS A CULTURAL, EDUCATIONAL AND CONSERVATION LEADER.
Expenses $11,077,863 · Revenue $9,011,929
-
THE MARITIME AQUARIUM AT NORWALK SPECIALIZES IN EDUCATION PROGRAMMING FOR SCIENCE, TECHNOLOGY, ENGINEERING AND MATH (STEM) AT ALL AGE LEVELS, FROM PRE-K THROUGH 12TH GRADE. EDUCATION PROGRAMS ARE CONDUCTED IN A WIDE VARIETY OF VENUES AND MEDIA: IN CLASSROOMS AT THE AQUARIUM; IN SCHOOLS THROUGHOUT THE STATE THROUGH OUR TRAVELING TEACHER PROGRAM; AS PART OF AFTERSCHOOL, WEEKEND PROGRAMS AND SUMMER CAMPS; THROUGH WHOLE SCHOOL PARTNERSHIPS; ONLINE VIRTUALLY THROUGHOUT THE WORLD THROUGH DIGITAL PROGRAMMING; ALONG COASTAL WATERWAYS AND SHORELINES THROUGH OUTDOOR PROGRAMMING; ON THE WATERS OF LONG ISLAND SOUND. PROGRAMS ARE DESIGNED TO IMPROVE STEM LITERACY AT ALL LEVELS USING LIVE ANIMALS AND INTERACTIVE EXPERIENCES IN THE LOCAL ENVIRONMENT OF THE LONG ISLAND SOUND. THE AQUARIUM HAS GROWING INVOLVEMENT IN PROFESSIONAL DEVELOPMENT TRAINING FOR TEACHERS SPECIFICALLY IN THE AREA OF STEM PROGRAMMING.
Expenses $1,987,428 · Revenue $1,128,378
-
THE 4D THEATER OFFERS A SENSORY-BASED MOVIE EXPERIENCE FOR GUESTS TO ENJOY AND LEARN THROUGH THE ENTERTAINING AND EDUCATIONAL FILMS THAT PLAY IN THE THEATER. FILMS COVER ALL ASPECTS OF THE NATURAL WORLD. THE 4D THEATER ALSO SERVICES AS A VERSATILE VENUE FOR LECTURES, SCREENINGS, PRESENTATIONS, DISCUSSIONS, ETC., FOR THE COMMUNITY AND FOR PRIVATE GROUPS.
Expenses $115,673 · Revenue $471,145
As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.
Officers and directors · 2024
As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.
-
Clayton FowlerCLAYTON FOWLER
CHAIR
- Total calculated
- $0
- Hours/week
- 3
-
William BurnhamWILLIAM BURNHAM
1ST VICE CHAIR
- Total calculated
- $0
- Hours/week
- 1
-
Neil BeupNEIL BEUP
2ND VICE CHAIR
- Total calculated
- $0
- Hours/week
- 1
-
Richard HokinRICHARD HOKIN
TREASURER
- Total calculated
- $0
- Hours/week
- 1
-
Novelette PeterkinNOVELETTE PETERKIN
SECRETARY
- Total calculated
- $0
- Hours/week
- 1
-
Earl MixEARL MIX
ASSISTANT TREASURER
- Total calculated
- $0
- Hours/week
- 1
-
Kathryn Bowler MitchellKATHRYN BOWLER MITCHELL
ASSISTANT SECRETARY
- Total calculated
- $0
- Hours/week
- 1
-
Brian BidolliBRIAN BIDOLLI
TRUSTEE, EX OFFICIO
- Total calculated
- $0
- Hours/week
- 1
-
Norm BloomNORM BLOOM
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Kevin ConroyKEVIN CONROY
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Robert CounihanROBERT COUNIHAN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Rev Dr Lindsay CurtisREV DR LINDSAY CURTIS
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Cheryl De VonishCHERYL DE VONISH
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Sharon GieseSHARON GIESE
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Ann GilmartinANN GILMARTIN
TRUSTEE, EX OFFICIO
- Total calculated
- $0
- Hours/week
- 1
-
Jim HallJIM HALL
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Melissa Joan HartMELISSA JOAN HART
TRUSTEE (UNTIL 12/2024)
- Total calculated
- $0
- Hours/week
- 1
-
Natalie Simpson LittleNATALIE SIMPSON LITTLE
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Basil MavroleonBASIL MAVROLEON
TRUSTEE (FROM 12/2024)
- Total calculated
- $0
- Hours/week
- 1
-
Deborah McLeanDEBORAH MCLEAN
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Michael ReillyMICHAEL REILLY
TRUSTEE, EX OFFICIO
- Total calculated
- $0
- Hours/week
- 1
-
The Hon Harry RillingTHE HON HARRY RILLING
TRUSTEE, EX OFFICIO
- Total calculated
- $0
- Hours/week
- 1
-
Diane SchlinkertDIANE SCHLINKERT
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Harlan StoneHARLAN STONE
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
-
Michael WeinstockMICHAEL WEINSTOCK
TRUSTEE
- Total calculated
- $0
- Hours/week
- 1
The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.
Filings
-
2024
- Revenue
- $20,483,968
- Expenses
- $17,173,437
- Contributions
- $9,364,957
- Grants paid
- $0
-
2023
- Revenue
- $16,484,562
- Expenses
- $16,070,620
- Contributions
- $5,901,569
- Grants paid
- $0
-
2022
- Revenue
- $16,120,847
- Expenses
- $14,326,913
- Contributions
- $5,760,877
- Grants paid
- $0
The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.
Other returns filed
-
2021 · 990
- Revenue
- $18,240,112
- Expenses
- $13,247,564
- Assets (EOY)
- $22,903,050
-
2020 · 990
- Revenue
- $11,308,442
- Expenses
- $9,771,927
- Assets (EOY)
- $19,089,489
-
2019 · 990
- Revenue
- $7,998,320
- Expenses
- $10,537,490
- Assets (EOY)
- $20,986,448
-
2018 · 990
- Revenue
- $16,220,239
- Expenses
- $12,549,173
- Assets (EOY)
- $22,770,312
-
2017 · 990
- Revenue
- $11,441,286
- Expenses
- $12,906,434
- Assets (EOY)
- $22,871,999
-
2017 · 990
- Revenue
- $11,441,286
- Expenses
- $12,906,434
- Assets (EOY)
- $22,871,999
-
2016 · 990
- Revenue
- $12,454,887
- Expenses
- $12,233,431
- Assets (EOY)
- $20,063,762
-
2015 · 990
- Revenue
- $11,085,191
- Expenses
- $11,363,815
- Assets (EOY)
- $19,592,410
-
2014 · 990
- Revenue
- $11,272,679
- Expenses
- $10,751,193
- Assets (EOY)
- $19,857,371
-
2013 · 990
- Revenue
- $10,877,852
- Expenses
- $10,403,938
- Assets (EOY)
- $18,989,670
Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.
Grants made
No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.
Grants received
-
CONNECTICUT HUMANITIES COUNCIL
$2,700,000
2022 KIDS FREE SUMMER MUS
-
CONNECTICUT HUMANITIES COUNCIL
$2,700,000
2023 CT SUMMER AT THE MUS
-
2024 GENERAL SUPPORT
-
2024 ENDANGERED SPECIES COVID RELIEF
-
2022 ENDANGER SPECIES COVID RELIEF
-
2022 For grant recipient's exempt purposes
-
2024 RESTORING NORWALK SHORELINE IN LONG ISLAND SOUND
-
2023 For grant recipient's exempt purposes
-
2024 For grant recipient's exempt purposes
-
2024 FOR GENERAL SUPPORT
The 10 largest by cash amount. The API serves every itemized grant.
Other IRS files
Auto-Revocation List
Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.
Publication 78
Listed as of 13 October 2026, under deductibility PC.
These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.
What this page reflects
The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.