Elephant seal travels 18,000 miles in 11 months

Wide ranging nomadic existence
December 2011. An elephant seal, fitted with a satellite tracking device by Wildlife Conservation Society (WCS), was tracked travelling an astonishing 18,000 miles in 11 months.

WCS tracked the male seal from December, 2010, to November, 2011. The animal - nicknamed Jackson - was tagged on the beach in Admiralty Sound in Tierra del Fuego in southern Chile. WCS conservationists fitted Jackson with a small satellite transmitter that recorded his exact location when he surfaced to breathe.

Nomadic existence
Jackson swam 1,000 miles north, 400 miles west, and 100 miles south from the original tagging location, meandering through fjords and venturing past the continental shelf as he foraged for fish and squid. During this tracking, the WCS team analyzed the data to better understand elephant seal migratory routes.

Elephant seals are potential indicators of the health of marine ecosystems and may show how climate change influences the distribution of prey species that serve as the basis of Patagonia's rich marine ecosystem. To protect this vast region, conservationists need to know how wildlife uses it throughout the year.

Clues to sustainability
"Jackson's travels provide a roadmap of how elephant seals use the Patagonian Coast and its associated seas," said Caleb McClennen, WCS Director for Global Marine Programs. "This information is vital to improving ocean management in the region, helping establish protected areas in the right places, and ensuring fisheries are managed sustainably without harming vulnerable marine species like the southern elephant seal."

The information WCS gathers will serve as a foundation for a new model of private-public, terrestrial-marine conservation of the Admiralty Sound, Karukinka Natural Park (a WCS private protected area), and Alberto de Agostini National Park. It will help build a broader vision for bolstering conservation efforts across the Patagonian Sea and coast.


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