The fin whale population has doubled since the 1970s due to reduced catches in the North Atlantic and international bans on commercial whaling.
Notes on verification
Confirmed by IUCN's 2018 Red List update, with independent corroboration from phys.org, Maritime Executive, IFAW, and other secondary sources. Consistent figures across sources with no contradictions found. [cascade flags: aggregator_dropped_primary_exists | tier=unverified indep_score=0.3 clusters=2 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- Learn how species that faced extinction are bouncing back (seed:environment_and_wildlife)
- https://iucn.org/news/species/201811/fin-whale-mountain-gorilla-recovering-thanks-conservation-action-iucn-red-list (corroboration)
- https://maritime-executive.com/article/whale-conservation-success-highlighted-in-iucn-red-list-update (corroboration)