The power of walking isunderappreciated.
It requires considerable brain power to move around. Hippocrates said walking is the best medicine.
It moves around in rock pools in search of food. The young sea squirt develops a brain, eye, and spine to support this movement. In his book, “In Praise of Walking”, O’Mara talks about the life of a sea squirt.
The brain, eye, and spine are eaten. It doesn’t need them anymore. The sea squirt undergoes a major transition as it matures. It is attached to a rock and never moves again.
The genes of the skate and the mouse were compared by biologists. The biologists discovered that the two species share many genes. The genes determine the location of their limbs and nerves.
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