In order to see if sharks are following fishermen's boats, two shark experts use acoustic telemetry to see if the sharks have learned to associate the noise of a motor with the expectation of food.
From: NATURE SHOCK: Shark Gangsters
http://bit.ly/1lEyrVd
Published 2013-08-13 · Watch on YouTube ↗ Availability and playback restrictions are controlled by the original channel.