Fig. 3

Acceleration traces from a blacktip shark that died approximately 40 min after release and was scavenged 4 h later and the float package ingested (dashed line). Tailbeat acceleration from when the blacktip was alive shows a tailbeat frequency at 0.7 Hz (a). Tailbeat oscillations stop 40 min after release, showing that the shark died (b). Tailbeats resume 4 h later when the package was ingested, but average a lower frequency, 0.5 Hz (c), indicating that the scavenging animal was larger than the blacktip