Nonprofit · EIN 20-8328051
MARINE CONSERVATION SCIENCEINSTITUTE
Tax-exempt · FALLBROOK, CA 92028
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $27,371 | $32,086 | -$4,715 | $507,046 | $0 | $507,046 |
| December 31, 2024 | 990-PF | $26,834 | $26,905 | -$71 | $506,862 | $0 | $506,862 |
| December 31, 2023 | 990-PF | $35,818 | $53,800 | -$17,982 | $485,337 | $121 | $485,216 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $6,159
- Dividends
- $16,640
- Interest
- $38
- Net gain from sales of assets
- $4,401
- Other income
- $133
Expenses
- Grants and similar amounts paid
- $0
- Excise tax on investment income
- $293
Balance sheet and other
- Total assets, start of year
- $506,862
- Total assets, end of year
- $507,046
- Total liabilities, end of year
- $0
- Net assets, end of year
- $507,046
- Fair market value of assets
- $507,046
- Net investment income
- $21,079
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Michael Domeier 72-1137 Makalei Dr, KailuaKona, HI 967408454 | President | 5 | $0 |
| Dr Pat Colin Box 1765, Koror, Koror PW 96940, PS | Director | 1 | $0 |
| Dr Dale Kiefer 15323 Bestor Blvd, Pacific Palisades, CA 90272 | Director | 1 | $0 |
| Mr Alexandre DeLatour 150 Southfield Ave Apt 2336, Stamford, CT 06902 | Director | 1 | $0 |
990-PF for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Michael Domeier 72-1137 Makalei Dr, KailuaKona, HI 967408454 | President | 5 | $0 |
| Dr Pat Colin Box 1765, Koror, Koror PW 96940, PS | Director | 1 | $0 |
| Dr Dale Kiefer 15323 Bestor Blvd, Pacific Palisades, CA 90272 | Director | 1 | $0 |
| Mr Alexandre DeLatour 150 Southfield Ave Apt 2336, Stamford, CT 06902 | Director | 1 | $0 |
990-PF for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Dr Michael Domeier 72-1137 Makalei Dr, KailuaKona, HI 967408454 | President | 5 | $5,000 |
| Dr Pat Colin Box 1765, Koror, Koror PW 96940, PS | Director | 1 | $0 |
| Dr Dale Kiefer 15323 Bestor Blvd, Pacific Palisades, CA 90272 | Director | 1 | $0 |
| Mr Alexandre DeLatour 150 Southfield Ave Apt 2336, Stamford, CT 06902 | Director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 1595 S MISSION RD, FALLBROOK, CA 92028-4136
- In care of
- % MICHAEL L DOMEIER
- Signed the 990-PF
- Michael Domeier, President
- Phone
- (760) 723-7724
- Website
- www.marinecsi.org
- Return prepared by
- Pathway Consulting Group
California records
California keeps its own records of charities and corporations. Search them by EIN 20-8328051 or by the name MARINE CONSERVATION SCIENCEINSTITUTE.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 20-8328051
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private operating foundation
- Donations deductible (Pub 78)
- Private operating foundation, 50% limit
- Exempt since
- 2007
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T23)
- Assets (IRS master file)
- $507,046
- Income (IRS master file)
- $41,350
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $27,371 | $32,086 | $507,046 | IRS |
| 990-T | December 2025 | – | – | – | IRS |
| 990-PF | December 2024 | $26,834 | $26,905 | $506,862 | XML |
| 990-T | December 2024 | – | – | – | IRS |
| 990-PF | December 2023 | $35,818 | $53,800 | $485,337 | XML |
| 990-T | December 2023 | – | – | – | IRS |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-T | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-T | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
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 20-8328051).
Questions about MARINE CONSERVATION SCIENCEINSTITUTE
- What is the EIN of MARINE CONSERVATION SCIENCEINSTITUTE?
- The employer identification number (EIN) of MARINE CONSERVATION SCIENCEINSTITUTE is 20-8328051.
- Is MARINE CONSERVATION SCIENCEINSTITUTE tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
- Are donations to MARINE CONSERVATION SCIENCEINSTITUTE tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private operating foundation, 50% limit).
- Which annual return does MARINE CONSERVATION SCIENCEINSTITUTE file?
- Form 990-PF. Private foundations file every year.
- When is the next return of MARINE CONSERVATION SCIENCEINSTITUTE due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did MARINE CONSERVATION SCIENCEINSTITUTE last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of MARINE CONSERVATION SCIENCEINSTITUTE?
- The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does MARINE CONSERVATION SCIENCEINSTITUTE have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $27,371, expenses of $32,086 and total assets of $507,046 at year end.
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