<img class=”alignnone size-full wp-image-1824″ src=”https://mfournet.files.wordpress.com/2016/08/img_1169.jpg” alt=”IMG_1169″ width=”5184″ height=”3456″ />What is 5 1/2 feet long, weighs 135 pounds, and isn’t an intern? My favorite odontocete: <i>Phocoena phocoena</i>, the harbor porpoise.
Due to their vessel aversion they are slightly hard to study, and their distribution, population structure, and acoustic behavior in the Park is still largely unknown. Harbor porpoise, while not an endangered species, are very susceptible to disturbance from noise. I’m not personally studying the impact of noise on these graceful creatures here in the park, but I am encouraging my team to come up with some creative study ideas.
While deterred by motorized vessels, harbor porpoise don’t appear to be disturbed by kayaks. These lovely animals often swim within meters of us when we survey on the water. Their vocalizations are too high frequency for our hydrophones to pick up, but I can’t help but wonder if they’re echolocating our equipment.