Exactly right - its in the first panel; "giving back". It's addressing the scraps that whales (large donor's, sought by non-profit organizations) throw to NPO's to "give back" to their community, which they also claim on their taxes as a donation.
Not even fair there tho, in nature predators maintain a stable environment by regulating prey populations to sustainable sizes.
An equivalent under capitalism would be stronger anti-monopoly law and laws imposing heavy regulation on businesses above a given size within their respective markets.
A big hunter that keeps grazers at a size that doesn't allow them to begin just eating everything and starving everyone else out while depleting the resource well for all.