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335558 - Developer Mark Johnson out in the field holding an original DTAG.
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Developer Mark Johnson out in the field holding an original DTAG.
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Developer Mark Johnson out in the field holding an original DTAG.
Developer Mark Johnson out in the field holding an original DTAG.
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335558
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Developer Mark Johnson out in the field holding an original DTAG.
Developer Mark Johnson out in the field holding an original DTAG.
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Date
04/18/2006
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johnson-whale_d-tag.jpg
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Image of The Day caption: Mark Johnson, an engineer at WHOI, holds the "DTAG" , a non-invasive temporary tag he designed that attaches to a whale and records ambient sounds and the whale's motions as it dives. The tag then later pops off the whale and floats to the surface. Using such tags to study pilot whales in the Canary Islands, a research group including Johnson recently discovered that the whales behave like deep-sea cheetahs when they feed, performing high-speed sprints to depths of 1000 meters (3,280 feet) to catch prey. Annual Report caption: Engineer Mark Johnson and colleagues are using non-invasive, temporary tags––known as DTAGs––to digitally record the movements of whales during their dives, as well as the sounds that they make and hear. In a recent study of pilot whales, they discovered that the creatures make high-speed, all-or-nothing dives to chase and catch large prey before surfacing to catch their breath. Their behavior stands in stark contrast to the longer, slower, and more conservative dives of other whale species. Caption from Oceanus magazine, Vol. 50, No. 2, Pg. 62: Former WHOI engineer Mark Johnson co-invented the revolutionary DTAG. Caption from Oceanus magazine, Vol. 46, No. 3, Pg. 37: Mark Johnson, (shown here) an engineer at Woods Hole Oceanographic Institution, designed the DTAG, a noninvasive, temporary tag that records whale movements and sounds in the deep. Below, he is poised to attach a DTAG to a pilot whale off the island of El Hierro in the Canary Islands.
Image of The Day caption:
Mark Johnson, an engineer at WHOI, holds the "DTAG" , a non-invasive temporary tag he designed that attaches to a whale and records ambient sounds and the whale's motions as it dives. The tag then later pops off the whale and floats to the surface. Using such tags to study pilot whales in the Canary Islands, a research group including Johnson recently discovered that the whales behave like deep-sea cheetahs when they feed, performing high-speed sprints to depths of 1000 meters (3,280 feet) to catch prey.
Annual Report caption:
Engineer Mark Johnson and colleagues are using non-invasive, temporary tags––known as DTAGs––to digitally record the movements of whales during their dives, as well as the sounds that they make and hear. In a recent study of pilot whales, they discovered that the creatures make high-speed, all-or-nothing dives to chase and catch large prey before surfacing to catch their breath. Their behavior stands in stark contrast to the longer, slower, and more conservative dives of other whale species.
Caption from Oceanus magazine, Vol. 50, No. 2, Pg. 62:
Former WHOI engineer Mark Johnson co-invented the revolutionary DTAG.
Caption from Oceanus magazine, Vol. 46, No. 3, Pg. 37:
Mark Johnson, (shown here) an engineer at Woods Hole Oceanographic Institution, designed the DTAG, a noninvasive, temporary tag that records whale movements and sounds in the deep. Below, he is poised to attach a DTAG to a pilot whale off the island of El Hierro in the Canary Islands.
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© Woods Hole Oceanographic Institution
©Shane Gross/Greenpeace
Adobe Farmhouse Photography
Getty Images/iStockphoto
Illustration by Eric S. Taylor, WHOI Creative
Illustration by Jack Cook
Illustration by Jayne Doucette
Illustration by Natalie Renier, WHOI Creative
Marine Imaging Technologies, LLC © Woods Hole Oceanographic Institution
Photo by Amy Apprill
Photo by Craig LaPlante
Photo by Daniel Hentz
Photo by Danielle Fino
Photo by Darlene Trew Crist
Photo by Elise Hugus
Photo by Hannah Piecuch
Photo by Jayne Doucette
photo by Jeff Yonover
Photo by Katherine Spencer Joyce
Photo by Ken Kostel
Photo by Marley L. Parker
Photo by Matthew Barton
Photo by ML Parker
Photo by Rebecca Travis
Photo by Sean Patrick Whelan
Photo by Tina Thomas
Photo by Tom Kleindinst
Photo by Véronique LaCapra
Photo courtesy of Woods Hole Oceanographic Institution Archives
Photographie : @alexis.rosenfeld
ROV SuBastian / Schmidt Ocean In
Video by Craig LaPlante
Video by Danielle Fino
Video by Hannah Piecuch
Video by Jayne Doucette
Video by Ken Kostel
Video by Matthew Barton
-- Other --
Photo courtesy of Mark Johnson
Copyright statement
@2021 Woods Hole Oceanographic Institution, all rights reserved
@2023 Woods Hole Oceanographic Institution, all rights reserved
© Alexis Rosenfeld
© Bearwalk Cinema
© C. A. Linder
© Consortium for Ocean Leadership
© Daniel P. Zitterbart
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© Mote Marine Laboratory
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2018 - The Boston Globe
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Cape Cod Times
CC BY-SA Troy Sankey
Commonwealth of Australia (GBRMPA)
Copyright (c) 2012 Vanderhaegen Bart
Copyright © 2010 David M. Lawrence
Copyright 2002
Copyright 2007 Jeff Yonover
Copyright 2019 to Nick Valentine
Copyright Jim Stringer
Copyright,
Copyright: Jenouvrier - WHOI
Croy Carlin
Dee Sullivan
Franz Mahr
FtLaudGirl
Hasselblad H6D
Henley Spiers
Image courtesy of NOAA Ocean Exploration, Deep Connections 2019.
Jeff Yonover 2015
Lewis Burnett
Luis Lamar
Marley Parker/WHOI
Martin Schiller http://martin-schiller.de
MINFIN PHOTOGRAPHY
Moorefam
NautilusLive/Ocean Exploration Trust
Paul Caiger
Photo by Chris Linder, WHOI
Rachael Talibart 2016
Robert E. Todd
roger fishman 2019
SP Whelan
thexfilephoto
Thomas A D Slager
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UnderCurrent Productions
Unless otherwise noted (copyrighted material for example), information presented on this World Wide Web site is considered publi
WHOI
WHOI 2005
WHOI/ML Parker
Woods Hole Oceanographic Institution
Woods Hole Oceanographic Institution.
www.joshuaqualls.com
-- Other --
© Woods Hole Oceanographic Institution
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johnson-whale_d-tag.jpg
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etaylor: Oceanus magazine, vol. 50, no. 2, pg. 62 ashapiro: oc ashapiro: oc tkleindinst: For Jim Rakowski dfino: whoi.edu jcanavan: 07 annual report jdoucette: Image of The Day, 09/27/2008 jcanavan: Oceanus magazine, Vol. 46, No. 3, Pg. 37
etaylor: Oceanus magazine, vol. 50, no. 2, pg. 62
ashapiro: oc
ashapiro: oc
tkleindinst: For Jim Rakowski
dfino: whoi.edu
jcanavan: 07 annual report
jdoucette: Image of The Day, 09/27/2008
jcanavan: Oceanus magazine, Vol. 46, No. 3, Pg. 37
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DTAG - Digital acoustic recording TAG
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