County Commissioners Hear Proposal for an "Invisible Fence" to Drive Seals (and Sharks) Away from Swimming Beaches

Deep Blue LLC makes presentation on acoustic system...

Representatives from Deep Blue LLC met with Barnstable County Commissioners today to describe their concept of a seal-repelling acoustic barrier of underwater audio devices near many of the Cape's swimming beaches.

The concept is much like an "invisible fence" some folks use to keep their dogs in the yard.  The system would emit a sonic tone that would sound unpleasant to seals and thus force them away from swimming areas, theoretically also drawing sharks away from those areas.  The tone would not be audible to humans.

County Commissioners spoke well of the system as a "proactive rather than reactive" measure that might "give the public more confidences in our beaches."

Deep Blue LLC's Willy Planinshek described the system of devices that would be mounted on buoys offshore.

The company will continue their research and was invited to return to the Commissioners this fall with an update.

Meanwhile, many Cape beaches will begin the season with "stop the bleed" style medical kits, emergency call boxes and special training for lifeguards along with other safety measures.

You can watch the full session before the County Commissioners here. welcomes thoughtful comments and the varied opinions of our readers. We are in no way obligated to post or allow comments that our moderators deem inappropriate. We reserve the right to delete comments we perceive as profane, vulgar, threatening, offensive, racially-biased, homophobic, slanderous, hateful or just plain rude. Commenters may not attack or insult other commenters, readers or writers. Commenters who persist in posting inappropriate comments will be banned from commenting on