Fig. 2. Body vibrations recorded from a 78 mm CL intermolt female. Individual lobsters often produced signals of variable durations. (A) As an example, the first vibration shown was 170 ms long while the second vibration was 1590 ms in duration. (B) Expanded view of the first body vibration, denoted with a bar in A. Scale: A, 20 mV, 250 ms; B, 20 mV, 25 ms.