Future Oceans 70 kHz Dolphin Pinger
The Dolphin Pinger emits a 145 decibel signal, every 4 seconds for 300 milliseconds. The higher sound pressure level output of this Pinger compared to the 132 decibel output of the Porpoise Pinger, reflects the fact that Dolphins are typically larger and more robust mammals than Porpoises and as such a more robust Pinger signal is needed to alert Dolphins to fishing gear.
In an ongoing study in Portugal (www.safeseaproject.org) the use of the Dolphin Pingers in 2011 resulted in a 100% Dolphin bycatch reduction in beach purse seiners. Portuguese Purse seiners and gill netters using the Dolphin Pinger in these trials showed a reduction in Dolphin bycatch by over 70%.
Our Dolphin Pinger was designed specifically with commercial fishers in mind. It is the smallest, lightest Pinger available and is now winning the support of commercial fishermen all over the world.
How does it work?
The 70 kHz Dolphin Pinger works by emitting a signal that is known to be in the best hearing range of most Dolphin species. The signal acts as an alarm, and scientists believe that in some cases the Pinger stimulates Dolphins to use their echolocation which alerts them to the presence of the Pingers and fishing nets.
Who Should use it?
The Dolphin Pinger will alert most Dolphin species to whatever the Pingers are attached to including:
- Gill nets
- Purse seine nets
- Line and trap fishing
- Aquaculture operations
In fact any gear or infrastructure in the water that may accidentally entangle Dolphins can be fitted with Future Oceans Dolphin Pingers.
How do they operate?
The Dolphin Pingers use a replaceable non rechargeable long life Lithium Ion battery. The batteries in the Dolphin Pinger will last 12 months based on everyday use for 12 hours per day. Batteries are very easily replaced simply by unscrewing the two ends of the Pinger, removing the battery tray which holds the battery, replacing the battery and putting the battery holder back inside the Pinger.
How do I maintain the Dolphin Pinger?
Our Dolphin Pingers were designed for the harsh conditions experienced on commercial fishing vessels. The water contacts on the Pinger provide a hands free operation – there is nothing to do other than fit the Pingers to nets and as soon as the Pingers are immersed in the water they begin working. Once they are on board and dry, they automatically shut down and stop pinging.
As with all fishing equipment a quick wash down with fresh water every now and then can never hurt. When batteries are replaced the O ring should be inspected and replaced if there are any signs of wear and tear. A silicone based grease should be applied lightly to the O ring and Pinger threads every year.
Please refer to the FAQ page for more information on the Dolphin Pinger and contact a Future Oceans distributor today to discuss the right requirements for your operations.