A pinger is attached to a net. The net is lowered into the tank. The net is positioned.
Behavioral data is recorded.
We are currently conducting gill-net objects and pinger experiments each day at Sea World with harbor seals and Commerson's dolphins. We use gill-net fragments mounted on a plastic frame which we lower into the pool. The nets are specially designed so the study animals don't become accidentally caught and injured. Commerson's dolphins echolocate at such high frequencies that we cannot hear their sounds with our human ears. So we have to record their sounds through a device that lowers the frequency to something we can hear and record.