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shared by Mars Base on 06 Jun 12 - No Cached

In November 2008, a female manta ray got stuck in a fishing net off the coast of Okinawa, Japan
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fishermen called up the local aquarium, where scientists were studying how the creatures reproduce
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The ray was pregnant
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...4 more annotations...
manta rays give birth to live young, but they don't have an umbilical cord or a placenta to deliver oxygen
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researchers have figured out how manta ray embryos get oxygen without a mammal's life-support equipment
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uterus is closed off from the outside seawater, so the embryo has to be getting oxygen somehow, but nobody knew how
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checked to see if she was pregnant using an ultrasound machine that had been modified to keep water away from the electronics
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