· Private foundation
Honda Marine Science Foundation
Its FY2021 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2018–2021.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| THE NATURE CONSERVATORY | $100,000 |
| CALIFORNIA OCEAN SCIENCE TRUST | $92,257 |
| SAN DIEGO AUDUBON SOCIETY | $85,229 |
| DUKE UNIVERSITY | $75,926 |
| EARTHCORPS | $75,702 |
| CALIFORNIA SEA GRANT UCSD | $56,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY18–21) land where the poverty rate runs at 10%, against an area that typically sits at 8%. 85% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
California Coastkeeper Alliance unites Waterkeeper programs statewide to fight for swimmable, fishable, and drinkable waters for all Californians.
The San Francisco Bay Bird Observatory is dedicated to the conservation of birds and their habitats through science and outreach.
Provide scientific support and tools for decision making and communication through collaborative efforts.
Sustainable Conservation advances the collaborative stewardship of Californias land, air, and water for the benefit of nature and people. For over three decades, Sustainable Conservation has built coalitions of people with different…
Bay Nature connects the people of the San Francisco Bay Area to our natural world and motivates people to solve problems with nature in mind. Our vision is that all people have a close relationship with theirnatural world.
To mobilize people in local communities around the world to protect marine wildlife and the oceans and inland watersheds that sustain them.
The institute is dedicated to scientific research, the results of which are used to promote public awareness and education in the areas of conservation biology and ecology,including the wise use of natural resources.
Research, education and conservation work to improve the health & productivity of coastal envirmonments for endangered species & human livlihoods that depend on them.
The organization was established to protect and restore the santa barbara channel and its watersheds through science-based advocacy, education, field work, community engagement, and citizen enforcement of environmental laws.
The mission of wildcoast is to conserve coastal and marine ecosystems and address climate change through natural solutions. our staff is dedicated to conserving threatened and endangered coastlines and wildlife in california and mexico.…
Balboa Park Conservancy (the Conservancy) was organized on November 3, 1923. The Conservancy is the City of San Diegos (the City) partner and advocated for the greater good of Balboa Park (the Park). The Conservancy collaborated with and…
For reference, the grantee most central to the portfolio’s shape is California Ocean Science Trust and the most unlike its peers is Smithsonian Institution. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
8 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 8 of the 15 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Honda Marine Science Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Honda Marine Science Foundation?
Find your warmest path to Honda Marine Science Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.