The internet of seals: how sensors for elephant seals tackle climate change

Smart connected trackers are making it easier to study animals – and find out how the world is reacting to global warming
The first time Michael Fedak told other researchers he wanted to study climate change by fixing satellite-connected sensors to the heads of deep-diving ocean mammals, the University of St Andrews biology professor was laughed at.
But for the past decade, elephant seals have been collecting data from the depths of the ocean via sensors and transmitters stacked on their heads