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The Pilot Study led by Cawthron Institute researcher Deanna Clement put digital acoustic recording tags (D-tags) on 11 Hector’s dolphins.
The tags, developed by expat New Zealand engineer Mark Johnson, attach to the dolphins via suction cups and are programmed to detach after a day or two. They have transformed our ability to study these animals.
They record with very high resolution all movements of the animal, and at the same time, they record the sounds that the animal makes.
By listening in to the dolphins’ echolocation clicks, scientists can tell when the animals are hunting. Like a Geiger counter in a fallout zone, the clicks get closer together as the dolphin homes in on its prey.
Shot on assignment for New Zealand Geographic Issue: 183 September / October 2023.
Read the Feature: https://www.nzgeo.com/stories/the-special-case-of-our-smallest-dolphins/
Photograph Richard Robinson © 2023.
Rights managed image. No Reproduction without prior written permission.
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Richard Robinson © 2023. No Reproduction without prior written permission.
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THE SPECIAL CASE OF OUR SMALLEST DOLPHINS
The Pilot Study led by Cawthron Institute researcher Deanna Clement put digital acoustic recording tags (D-tags) on 11 Hector’s dolphins. <br /> The tags, developed by expat New Zealand engineer Mark Johnson, attach to the dolphins via suction cups and are programmed to detach after a day or two. They have transformed our ability to study these animals.<br /> They record with very high resolution all movements of the animal, and at the same time, they record the sounds that the animal makes.<br /> By listening in to the dolphins’ echolocation clicks, scientists can tell when the animals are hunting. Like a Geiger counter in a fallout zone, the clicks get closer together as the dolphin homes in on its prey.<br /> Shot on assignment for New Zealand Geographic Issue: 183 September / October 2023.<br /> Read the Feature: https://www.nzgeo.com/stories/the-special-case-of-our-smallest-dolphins/<br /> Photograph Richard Robinson © 2023.<br /> Rights managed image. No Reproduction without prior written permission.