Natural History Wanderings

ScienceAlert reported

When a blue whale dives below the waves, their heart rate plummets to conserve oxygen.

Their massive hearts can slow to just two beats per minute as they dive hundreds of meters in search of food.

Read more at https://www.sciencealert.com/scientists-are-starting-to-understand-the-largest-biomechanical-event-on-earth-whales-hunting-for-food-on-a-single-breath