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How long can a sperm whale hold its breath?

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As you can imagine, animals that can hold their breath for a very long time, such as marine mammals, naturally have a lot more myoglobin in their tissues than we do. Point of fact: Myoglobin gives meat its red color, but the muscles of whales and other diving mammals are black because they have so much of the protein. read more

Sperm whales make some of the longest dives achieved by mammals, with some lasting up to 90 minutes, while dolphins and other whales can stay underwater for 20 minutes. read more

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