The robotic fish can replicate a high-speed maneuver used by real-life fish to evade prey called the C-turn. The move is pulled off in just a fraction of a second.
The robotic fish is powered by an internal canister of carbon dioxide, which causes certain channels in the fish’s body to inflate, causing the tail to bend in the opposite direction. Performed in rapid succession, these movements propel the fish forward and can allow it to make hairpin turns like those performed by real fish. Researchers say the robotic fish can perform 20 to 30 escape maneuvers.
"This could be the ultimate exploration tool for the underwater world,"
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