How much did the real blue whale heart preserved by the Royal Ontario Museum weigh, in kg? (1 kg ≈ 2.2 lb)

Answer

180 kg

When the Royal Ontario Museum preserved the heart, it turned out to be about the size of a small golf cart — far smaller than the old legend claimed, and its aorta can fit a human head but is far too small for anyone to swim through.

Source: Royal Ontario Museum / Smithsonian Magazine