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| A beautiful misty morning. |
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| Adult female sea urchin - yellow at the bottom of the beaker are the eggs. To sex the urchins, hold the urchin in your hand, spiny side up and look for large gonopores on the top. Draw a syringe with a needle and inject KCl into each of the 5 corners of the pentagon-shaped mouth. Shake the urchin and turn upside down into a sea-water filled beaker. |
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| Eggs from the male are collected by using a syringe to suck up white, gooey material from the top of the creature. |
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| Way cool microscope that takes time-lapse photography of fertilization of sea urchin eggs. |
For more info, check out this cool
blog.
Shar Levine
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