“Why can turtles swim and tortoises can’t?” Clara, 8, Washington

Joseph K. Gaydos Senior wildlife veterinarian, SeaDoc Society, UC Davis SVM Some turtles evolved to spend long periods of time underwater. For example, sea turtles have a streamlined shape with long flippers that are more useful for swimming than for walking. They can also hold their breath for a long time, partly thanks to their muscles’ ability to hold oxygen. Do you have a question for an animal expert? Send it to hello@theweekjunior.com. Find out more about UC Davis SVM at vetmed.ucdavis.edu.…

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The Week Junior US (Digital) - 1 Issue, Issue 219

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