Off the coast of New England, where deep-sea canyons funnel the ocean's richness toward the surface, scientists have counted more than two thousand creatures in a single day — blue whales, whale sharks, dolphins, manta rays — a congregation that speaks to what protected waters can hold. The Northeast Canyons and Seamounts Marine National Monument, established to preserve exactly this kind of abundance, now faces a quieter reckoning: a recent policy rollback has opened its waters to commercial fishing, arriving just as researchers have documented, with unusual precision, what is at stake. These