Wiring the ocean

Feb 18, 2013

For most people, the sea is a deep, dark mystery. That is changing, though, as scientists find innovative ways to track the movements of ocean-going creatures.

Stanford professor and Stanford Woods Institute Senior Fellow Barbara Block is using technology to enable live feeds of animal movements relayed by a series of "ocean WiFi hotspots." This could help protect by revolutionizing how we understand their function, population structure, and species' physiological and evolutionary constraints.

Block explains how she is studying pelagic creatures with telemetry tags, and how she plane to "wire" the ocean at the annual American Association for the Advancement of Science (AAAS) meeting in Boston.

The miniaturization of sensors for tags, combined with acoustic receiver-carrying mobile glider platforms and instrumented buoys, has vastly expanded our capacity to obtain data from oceans at levels as small as bacteria and as large as . Block's work is part of a larger effort to establish a global network of instruments to more comprehensively study the biosphere as it is altered – at unprecedented rates – by human activity and climate change.

Block's project, the Blue Serengeti Initiative, builds on the Tagging of Pacific Predators program, part of the global Census of Marine Life, a decade-long study that invested $25 million in electronic tagging, enabling from five nations to map ocean hot spots within the California Current.

At the AAAS meeting in Boston, Block will discuss her new project and explain how she uses wireless devices track the comings and goings of key ocean species.

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