This unique strategy may help the sharks survive strandings in tide pools.
Some sharks can"walk," and researchers recently discovered how one of these unusual shark species practice taking baby steps. They begin when they're newly hatched, and a hatchling's walk is no different from that of older juveniles.
It's one of nature's most distinctive survival strategies, but few studies have examined the physics behind epaulette shark locomotion and gait. Now, a new study in the journal Integrative and Comparative Biology is the first to describe the mechanics of how newly hatched epaulette sharks walk. Porter and Rummer suspected that baby sharks would walk differently than older juveniles and adults did. Epaulette sharks are born bloated, their bellies distended by a yolk sac that fulfills all of their nutritional needs for about one month until they are mature enough to feed on small fish and worms. Their baby fat then rolls off, giving way to the familiar spindle shape of an adult shark.
"I really thought baby sharks would move differently," Porter said."But in science, we take our best guesses based on the available evidence, and our hypothesis turned out to be wrong."
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