HOME >> BIOLOGY >> NEWS
Video cameras reveal seals, whales, and other marine mammals take a laid-back approach to deep diving

SANTA CRUZ, CA--For years scientists have puzzled over the ability of dolphins, seals, and other marine mammals to perform long, deep dives that seem to exceed their aerobic capacities. Now, with the help of sophisticated instruments and video technology, a team of researchers has resolved the paradox and discovered a laid-back diving strategy that appears to be widespread among marine mammals.

The researchers studied Weddell seals hunting beneath the ice in the Antarctic, a northern elephant seal diving in Monterey Bay, a trained bottlenose dolphin diving offshore of San Diego, and a 100-ton blue whale traveling off the coast of northern California. Video cameras mounted on the animals' backs revealed that they all started their dives with a few powerful swimming strokes, then made the rest of the descent mostly in a relaxed glide.

"Basically, they're turning the motor on and off in the course of the dive, and that enables them to reduce oxygen consumption by 10 to 50 percent compared with what they would need if they swam all the way down," said Terrie Williams, an associate professor of biology at the University of California, Santa Cruz.

Williams, working with collaborators from several institutions, found that marine mammals take advantage of a change in buoyancy due to increasing pressure with depth, which enables them to sink effortlessly through the water. The researchers describe their findings in the April 7 issue of the journal Science. Williams's coauthors include UCSC biologists Burney Le Boeuf and Donald Croll, Randall Davis and Markus Horning of Texas A&M University, Lee Fuiman of the University of Texas at Austin, John Francis of the National Geographic Society, and John Calambokidis of Cascadia Research in Olympia, WA.

The researchers correlated video images of the diving animals with data from other instruments, including time-depth recorders. With the Weddell seals, the scientists were able to monito
'"/>

Contact: Tim Stephens
stephens@cats.ucsc.edu
831-459-2495
University of California - Santa Cruz
6-Apr-2000


Page: 1 2 3

Related biology news :

1. Video review comes to the operating room: Videotaping surgeries offers opportunities to improve outcomes
2. Video And Data Link Provide Unique "Seals Eye View" Of The World
3. Brainy cameras
4. DNA lends scientists a hand, revealing new chemical reactions
5. Award winning researchers reveal potential new role for Glivec
6. Hidden diversity: DNA barcoding reveals a common butterfly is actually 10 different species
7. Anthrax enzyme images reveal secrets of antibiotic resistance, suggest new drug design
8. Brown research reveals key insight into memory-making
9. Study reveals why eyes in some paintings seem to follow viewers
10. Fossil genes reveal how life sheds form and function
11. New dye directly reveals activated proteins in living cells

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/23/2019)... ... , ... NanoFUSE is pleased to announce the ... spine and orthopedic use. Bioactive glass is a calcium phosphate coated silica that ... orthopedics for over 30 years and now NanoFUSE Biologics has used advanced research ...
(Date:7/19/2019)... ... July 19, 2019 , ... ... and Crystalline States – Insights from Synchrotron X-ray Pair Distribution (SXPDF) Studies”. The ... with Chris Benmore of Argonne National Laboratory and Gabriel de Araujo of the ...
(Date:7/17/2019)... Pa. (PRWEB) , ... July 15, 2019 , ... ... of computational science expertise exclusively for Life Sciences and Healthcare companies, announces the ... provide critical advisory services and strategic direction to start-up and emerging bio-pharma companies ...
Breaking Biology News(10 mins):
(Date:6/11/2019)... Fla. (PRWEB) , ... June 10, 2019 , ... ... in science and technology in an upcoming episode, scheduled to broadcast 4Q/2019. Check ... the Eppendorf Group) and will educate viewers about how its technology facilitates laboratories ...
(Date:6/11/2019)... POWAY, Calif. (PRWEB) , ... June 11, 2019 ... ... parent company of Personalized Stem Cells Inc. (PSC) , has announced that ... of Public Health, Food and Drug Branch for manufacturing. This is an ...
(Date:5/31/2019)... ... May 29, 2019 , ... For many years, the primary forms of cancer ... breakthrough therapies. Advances in immuno-oncology have led to the advent of Chimeric Antigen Receptor ... T cell receptors known as “CARs”. The CAR enables the final product to produce ...
(Date:5/31/2019)... ... May 30, 2019 , ... Object ... announce the strategic acquisition of Metabiologics, Inc., a globally recognized leader in the ... ownership and commercialization rights to a full spectrum of botulinum neurotoxins, as well ...
Breaking Biology Technology:
Cached News: