Humans keep most of their


neurons in their heads. But an octopus’s neurons are mostly in its arms. When an octopus is on the hunt, each arm can be doing something diff erent. If one arm suprises a shrimp, two other arms can catch it.


Masters of Disguise You dive again. Now you're


swimming over a shallow coral reef. Your guide has just seen an octopus. You look around to fi nd it. No


octopus. Just rocks, covered by corals and sponges. You look again.


An octopus blends in. Wait. T at patch of dark, velvety


corals isn’t corals. It’s a day octopus. It’s as big as a plate. Octopuses that live in shallow


water are masters of disguise. Other sea animals mask themselves, too. What look like patches of sand get up and walk about. What you're really seeing are crabs with sand-colored shells. Or you see sand-colored fl atfi sh swimming along. What makes octopuses unique is


their ability to camoufl age in more than one way. How do they do it?


The shape of an octopus's eye helps it to see color.


TRAILBLAZER


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