we've seen that squid can escape from predators by ejecting water. some squid do this at the surface of the ocean, thus launching themselves into the air-a particularly effective escape strategy. (figure 1) suppose a 36 kg squid (not including water) at rest at the surface of the water brings in and quickly ejects 3.0 kg of water to achieve a takeoff speed of 3.5 m/s; these are typical numbers.
