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Marine Species Monitoring

Banner day tagging odontocetes at Hatteras!

Posted on June 1, 2016

After a couple weeks of wind and rain, the weather gods smiled on us last week, and afforded us a chance to start our third year of satellite tagging work off Cape Hatteras, North Carolina, with Daniel Webster of Cascadia Research Collective.  To date we have tagged forty short-finned pilot whales (Globicephala macrorhynchus), eight pelagic bottlenose dolphins (Tursiops truncatus), nine Cuvier's beaked whales (Ziphius cavirostris), a single sperm whale (Physeter macrocephalus) and  a common dolphin (Delphinus delphis).

DSC_8744s.jpgCuvier's beaked whale (Ziphius cavirostris)

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Tag on a short-finned pilot whale (Globicephala macrorhynchus)

On our first day in the field in both 2014 and 2015, we deployed satellite tags on Cuvier's beaked whales. 2016 did not disappoint, as we had two tags on Ziphius before 10:30 in the morning.  The banner day continued with deployments on a bottlenose dolphin and short-finned pilot whale.  But the day wasn’t over yet, as just before heading back to shore we came across a group of approximately 200 Clymene dolphins (Stenella clymene), a species we have NEVER observed from the vessel.  Our aerial survey colleagues at the University of North Carolina Wilmington (UNCW) have seen this species from the plane, but it was still a great surprise for us.  Even better, we were able to deploy a satellite tag on one individual, which will provide the first movement data for this species in the mid-Atlantic.

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Clymene dolphin (Stenella clymene)

And the fun didn’t end on the water.  After returning to the field house and comparing photographs to our species catalog, we confirmed that one of the Cuvier’s beaked whales we tagged was in our photo-ID catalog, first observed in 2014. 

Thankfully, our good fortune continued over the next two days, with three tags deployed short-finned pilot whales on 26 May, and four tags deployed 27 May: one short-finned pilot whale, two more Cuvier’s beaked whales, and one short-beaked common dolphin.

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Short beaked common dolphin (Delphinus delphis)

 
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