Imagine you have three friends helping you carry your backpack, but only two can help at the same time. That's like having three hearts, two work while you're moving, and one takes a break until you stop. Octopuses are like that! They need all their energy to swim, so they save one heart for when they’re resting.
Examples
- A baby octopus uses its three hearts to swim around the coral reef.
- The octopus runs away from a crab, using two of its hearts to keep moving.
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See also
- How Do Birds Migrate So Far?
- What Causes Hiccups?
- How Can a Single Seed Grow into a Tree?
- Why Do People Have Different Shapes of Faces?
- Why Do We Blink?
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Categories: Biology · octopus,biology,heart function,circulatory system