Argolikos Gulf, Greece, June 2012 (photo S. Bonizzoni)
This fisherman complained about damage to his trammel nets caused by bottlenose dolphins and sea turtles.
Acoustic deterrent devices ("pingers") are sometimes used to scare dolphins away from the nets and prevent depredation. However, most of the interviewed fishermen reported that besides being expensive pingers only work for some time, but they soon become useless or end up attracting dolphins. In other words, sooner or later the dolphins habituate or adapt to noise and acoustic devices may turn into "dinner bells".
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