rozprava Dvojznačný Devíti how long can a blue whale hold its breath zrádce Notoricky známý Podle zákona
Mystery of how sperm whales hold their breath for 90 minutes solved as scientists discover the key is unique protein in their blood | Daily Mail Online
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Blue Whale Fact & Information Guide - American Oceans
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How Long Can Whales Hold Their Breath? Deep Divers & Master Lungs