California · Nonprofit
THE MARINE MAMMAL CENTER
THE MARINE MAMMAL CENTER (California) receives grants from 338 organizations whose IRS filings report $33,267,017 to it, the largest being THE MEADOWVIEW FOUNDATION ($9,050,000). 220 of them have funded it in more than one year.
- Revenue FY2025
- $19M
- Funders on record
- 338
- Grants received
- $33M
- Net assets
- $45M
What The Marine Mammal Center does
Mission
The Marine Mammal Center advances global ocean conservation through marine mammal rescue and rehabilitation, scientific research, and education. The center's work is guided and inspired by a shared vision of a healthy ocean for marine mammals and humans alike.
As stated on its FY2025 Form 990.
Programs
Program #1: rescue and rehabilitation: The Marine Mammal Center rescues and rehabilitates sick and injured marine mammals at its state-of-the-art veterinary facilities by engaging a dedicated workforce and a supportive community. Since 1975, the center has responded to more than 27,000 marine mammals, including sea lions, elephant seals, harbor seals, fur seals, sea otters, and more. In an effort to save hawaiian monk seals from extinction, the center opened the first-ever rehabilitation facility devoted to this endangered species in 2014, and since then has rehabilitated nearly 30 percent of the total population, which is estimated at about 1,600 individuals. The center admitted over 1,100 marine mammals with the help of volunteers who recorded more than 133,000 (continued in sched o) volunteer hours served, an estimated workforce value of approximately $5.3 million as of september 30, 2025.
$14,540,037 spent$134,021 earned by the program78% of program spendingProgram #2: education: The Marine Mammal Center leads as a teaching hospital by training veterinary professionals locally and internationally, and inspiring future ocean stewards through innovative school and public education programs. In 2025, the center engaged more than 44,000 children and adults through in-person programming with hands-on trainings, supporting the next generation of scientists and engaged citizens.
$4,020,536 spent$436,293 earned by the program22% of program spendingProgram #3: scientific research: The Marine Mammal Center learns from the patients in its care and contributes to scientific understanding of the changing health of our ocean, taking action to address ocean threats and save endangered species.
The 3 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $18,560,573.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $55M to $50M (−9%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2020 9% · 2021 13% · 2022 5% · 2023 20% · 2024 7% · 2025 8%. Grants only. Government contracts and fees sit inside program revenue.
89% of THE MARINE MAMMAL CENTER’s revenue is contributions — more donation-reliant than the typical peer (67% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Cecily Majerus
Chief executive officer
Board chair
Julian Brandes
Chair
As listed on its FY2025 Form 990.
The chief executive listed changed between the FY2023 and FY2024 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 80 funders to 161 funders, grant income rose $1.1M → $5.1M.
38 of 338 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 37% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of THE MARINE MAMMAL CENTER’s funders (the co-funder graph). Top 30 of 338 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
THE MARINE MAMMAL CENTER has a broad base — no single funder exceeds 27% of grant income, and it takes 6 funders to reach half.
the vertical line marks half of all grant income — 6 funders to its left
44% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund THE MARINE MAMMAL CENTER.
Largest funder’s share by year: 2017 16% · 2018 15% · 2019 43% · 2020 31% · 2021 39% · 2022 30% · 2023 29% — growing more concentrated.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
49% of THE MARINE MAMMAL CENTER's funders are still giving 3 years after their first grant; 65% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
71% of THE MARINE MAMMAL CENTER's grant income comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $12M arriving through sponsors registered in 19 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
THE MARINE MAMMAL CENTER's funding base is broadening — from 80 funders to 161 as grant income climbed.
this organization peer median middle 50% of peers· 134 animals nonprofits $10M–$100M, FY2025
Government funding THE MARINE MAMMAL CENTER receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $4.9M on record — $4.8M federal, $67k state.
- Department of Commerce$3.9M
- Department of the Interior$594k
- Institute of Museum and Library Services$197k
- Department of State$125k
- PROFESSIONAL SERVICES NON-IT$67k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like THE MARINE MAMMAL CENTER
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
79% of spending goes to programs.
Governance
Public support
84%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 40 states
Screen this organization
A dated, signed PDF of the compliance screen for THE MARINE MAMMAL CENTER: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds THE MARINE MAMMAL CENTER?
- THE MARINE MAMMAL CENTER (California) receives grants from 338 organizations whose IRS filings report $33,267,017 to it, the largest being THE MEADOWVIEW FOUNDATION ($9,050,000). 220 of them have funded it in more than one year.
- How many funders does THE MARINE MAMMAL CENTER have?
- IRS filings report 338 organizations giving $33,267,017 in grants to THE MARINE MAMMAL CENTER, 220 of which have funded it in more than one year.
- Who is the largest funder of THE MARINE MAMMAL CENTER?
- THE MEADOWVIEW FOUNDATION is the largest funder on record, with $9,050,000 in grants. The full list of funders is on this page.
- How can an organization like THE MARINE MAMMAL CENTER find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Marine Mammal Center →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 338 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing