How do dogfish escape from larger predatory sharks?

“Sharks modulate their escape behavior in response to predator size, speed and approach orientation”.  Scott Seamone, Tristan Blaine, and Timothy E. Higham.

 

expt_sharks Escape from predator–prey interactions, even among larger prey that are usually viewed as predators, may be critical for their survival. Using shark models and the large flume here at BMSC, the authors examined how altering the size, speed and approach of a large shark model influences escape behavior and performance in dogfish, Squalus acanthias, a smaller shark species that is preyed upon by large marine predators. Dogfish modulate their escape behaviour; the larger and faster the shark models triggered a more intense response (increased escape turning rate and acceleration).
 flume Small flume in foreground with a sculpin; the large flume used for the experiments is in the background. Photo courtesy Emily Kane.

ZOOLOGY,  Volume: 117,  Issue: 6,  Pages: 377-382