Limits RegistryPUBLIC RECORD
Limits RegistryA female blue whale caught in the Southern Ocean on March 20, 1947 was recorded at 190 tonnes (418,878 lb) and 27.6 meters long — the heaviest individual animal ever confirmed. Blue whales remain the most massive animals known to have lived, though several other species exceed them in body length alone.
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A female blue whale caught in the Southern Ocean on March 20, 1947 was recorded at 190 tonnes (418,878 lb) and 27.6 meters long — the heaviest individual animal ever confirmed. Blue whales remain the most massive animals known to have lived, though several other species exceed them in body length alone.
The greatest confirmed body mass recorded for a single blue whale (Balaenoptera musculus) — the heaviest animal known to have existed. Scoped to mass specifically: the blue whale is not the longest animal on record — the bootlace worm (Lineus longissimus) can reach roughly 55 m — this record concerns mass alone.
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Limits Registry. LR-BLUE-WHALE-MASS. Blue whale — heaviest recorded animal. 2026.