ナショナルジオグラフィックのインスタグラム(natgeo) - 8月25日 21時10分

Photo by @DavidDoubilet
A swell shark embryo called a pup grows inside a rubbery sac attached to a piece of seaweed. The pup will feed on the round yolk until it emerges in 9+ months depending on water temperatures. The empty case sometimes wash ashore and are called a "mermaid's purse"
Swell sharks get their name from their ability to ingest water to double their size to discourage predators. //
Photographed for @ナショナルジオグラフィック Sharks Magnificent and Misunderstood.
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With @natgeocreative @thephotosiciety
#ocean #shark #baby #birth for #moreocean follow @daviddoubilet

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