Arctic Walrus Change Mass Haul Out Behavior

SeaDiscovery.com
Thursday, October 10, 2013
Arctic Walrus Haul Out: Photo courtesy of NOAA

NOAA scientists participating in this year's annual Aerial Surveys of Arctic Marine Mammals project in Alaska say they have photographed an area where thousands of Pacific walruses haul out of the ocean on a remote barrier island in the Chukchi Sea, near Pt. Lay.

Scientists say it is difficult to provide an accurate count of the number of walruses densely packed together on coastal haulouts. Using aerial photographs, scientists estimated that this year's haulout at Pt. Lay initially contained 1,500 to 4,000 animals on Sept. 12. The number of walruses had increased to 5,500 to 8,000 when sighted on Sept. 22, and on Sept. 27, biologists estimated that there were approximately 10,000 walruses.

"Large walrus haulouts along the Alaskan coasts in the northeastern Chukchi Sea are a relatively new phenomenon," said Megan Ferguson, marine mammal scientist with NOAA Fisheries. "NOAA's research doesn't typically extend to studying walruses, since this is a species managed by the U.S. Fish and Wildlife Service (USFWS), so you can imagine how exciting it was for us to be able to collect such valuable data for our partner agencies."

In the past, walruses used sea ice habitat offshore in the northern Chukchi Sea as resting platforms in between dives to the bottom of the shallow Chukchi Sea where they feed on their preferred prey, including clams, snails and worms, during the summer and autumn. Due to loss of ice in offshore areas, walruses are foraging in more coastal areas and using beaches for resting (hauling out).

Conserving and restoring protected species such as whales is one of NOAA Fisheries' core missions. The goal of the surveys is to document the distribution and relative abundance of bowhead, gray, minke, fin whales, beluga whales and other marine mammals in areas of potential oil and natural gas exploration, development and production activities in the Alaskan Arctic.

This study is being funded and co-managed by the Bureau of Ocean Energy Management (BOEM)'s environmental studies program.
 

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

NASSCO Lays Keel for Jones Act Tanker Liberty

U.S. shipbuilder General Dynamics NASSCO hosted a keel laying ceremony on Thursday, May 26 for the Liberty, one of three new ECO Class Jones Act tankers under a

DSC Dredge Receives President’s E-Star Award

DSC Dredge, LLC, based in Reserve, La., has received the 2016 President’s “E-Star” Award for exports.   In a ceremony held on May 16, 2016, at the U.S. Department

TT Club Reports Robust Financial Results for 2015

TT Club has announced its financial results for the year ended December 31, 2015, and AM Best affirms its A- (Excellent) rating for the 10th consecutive year.   Knud Pontoppidan,

Environmental

GloMEEP Project Forges Ahead with Train-the-Trainer Workshop

A global Train-the-Trainer workshop on energy efficiency has been delivered in China (23-27 May), preparing the personnel needed to cascade knowledge on energy

Long Beach Port Maintains Strong Bond Rating

Fitch Ratings, one of the top three U.S. credit analysis agencies, has affirmed the Port of Long Beach’s “AA” rating on its outstanding debt. Fitch stated the AA rating — its highest for U.

Hansa Offenburg, Hansa Drakenburg Sail Scale-free

Leonhardt & Blumberg was founded in 1903 and has managed more than 180 vessels, the majority of which were general cargo vessels and bulk carriers. Today the company

Marine Science

P&I Club warns on Enclosed Space Entry & Testing

The London P&I Club says it continues to see cases of injuries and fatalities associated with entry into enclosed onboard spaces, including cargo holds on bulk

TAMRF Extends Research Vessel Charter

Overseas Drilling Ltd., a 100 percent owned subsidiary of Siem Offshore Inc., and Texas A&M Research Foundation (TAMRF) have agreed to extend the charter of the

Kongsberg Tech for Peruvian Arctic Research Vessel

Kongsberg Maritime has been chosen to deliver an integrated subsea technology systems package including two HUGIN Autonomous Underwater Vehicles (AUV) for a new

Arctic Operations

Defense Appropriations Bill Includes $1 Bln for US Icebreaker

The U.S. Senate Appropriations Committee’s FY2017 Defense Appropriations Bill has included $1 billion in funding to accelerate construction of a new polar icebreaker for the U.

Kongsberg Tech for Peruvian Arctic Research Vessel

Kongsberg Maritime has been chosen to deliver an integrated subsea technology systems package including two HUGIN Autonomous Underwater Vehicles (AUV) for a new

Technip Bags Statoil's Umbilical Supply Contract

Technip’s wholly-owned subsidiary Technip Umbilicals Ltd.(1) has been awarded a contract by Statoil ASA to supply the umbilical(2) to the Oseberg Vestflanken 2 field offshore Norway.

Ocean Observation

TAMRF Extends Research Vessel Charter

Overseas Drilling Ltd., a 100 percent owned subsidiary of Siem Offshore Inc., and Texas A&M Research Foundation (TAMRF) have agreed to extend the charter of the

Dubai Partners with WOC on Ocean Sustainable Dwevelopment

The Dubai Council on Marine and Maritime Industries (DCMMI) and the World Ocean Council (WOC) have agreed to collaborate on ocean sustainable development and corporate ocean responsibility.

Taiwan Maritime Negotiations with Japan

Taiwan’s Foreign Affairs Minister David Lee said  that the government is slated to start maritime negotiations with Japan by late July in an effort to better protect

 
 
Maritime Security Naval Architecture Navigation Pipelines Pod Propulsion Port Authority Salvage Ship Repair Ship Simulators Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1539 sec (6 req/sec)